Constructing a Strong Argument

The LNAT Section B essay is, at its core, a test of argumentation. Universities want to see that you can take a position, defend it with reasoning and evidence, acknowledge complexity, and reach a considered conclusion. This lesson breaks down the anatomy of a strong argument and shows you how to build one within the 40-minute time constraint.

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The Structure of a Strong Argument

Every effective argumentative essay follows a recognisable structure. In the context of Section B, with a target of 500–600 words, the following framework works well:

Section	Purpose	Approximate Length
Introduction	State your thesis clearly	50–80 words (2–3 sentences)
Body Paragraph 1	First supporting argument with evidence	100–120 words
Body Paragraph 2	Second supporting argument with evidence	100–120 words
Body Paragraph 3 (optional)	Third supporting argument OR counterargument and rebuttal	100–120 words
Counterargument and Rebuttal	Acknowledge opposing view and respond	80–100 words
Conclusion	Reinforce thesis and close	50–70 words (2–3 sentences)

Note: If you include a third body paragraph, the counterargument and rebuttal may be incorporated into it rather than given a separate section. With 500–600 words, you have room for either two strong body paragraphs plus a separate counterargument section, or three body paragraphs with the counterargument woven into one of them.

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Writing the Introduction

Your introduction has one job: state your thesis clearly and set up the essay. Do not waste words on vague scene-setting or broad generalisations.

What to Avoid

• "Throughout history, people have debated..."
• "This is a very interesting and controversial topic..."
• "There are many arguments on both sides..."

These openings are generic and add nothing. They could appear in any essay on any topic.

What to Write Instead

Get to the point. State the issue briefly, then deliver your thesis.

Example:

The question of whether governments should regulate social media has gained urgency as platforms increasingly shape public discourse. Governments should impose targeted regulation on social media companies, because self-regulation has consistently failed to prevent the spread of misinformation and the erosion of democratic debate.

This introduction is approximately 45 words. It identifies the issue, states a clear position, and previews the reasoning. That is all an introduction needs to do.

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Building Body Paragraphs

Each body paragraph should follow the P-E-E structure: Point, Evidence, Explanation.

Point

State the argument clearly in one sentence. This is your topic sentence — it tells the reader what the paragraph is about.

Evidence

Provide a specific example, fact, or illustration that supports your point. This is where you draw on current affairs, history, or general knowledge.

Explanation

Explain why your evidence supports your point and how it connects to your thesis. This is the most important part — it shows your reasoning.

Example body paragraph:

Social media companies have repeatedly demonstrated that self-regulation is insufficient to protect users from harmful content. Despite public commitments to tackle misinformation, platforms such as Facebook allowed false claims about COVID-19 vaccines to circulate widely throughout 2020 and 2021, reaching millions of users before action was taken. This pattern of reactive rather than proactive moderation demonstrates that commercial incentives — which favour engagement over accuracy — are fundamentally misaligned with the public interest. Only external regulation can realign these incentives.

This paragraph is approximately 85 words. It has a clear point (self-regulation is insufficient), specific evidence (COVID-19 misinformation on Facebook), and explanation (commercial incentives misaligned with public interest).

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The Role of the Thesis Throughout

Your thesis should function as a thread running through the entire essay. Each body paragraph should explicitly connect back to the thesis. Use phrases such as:

• "This further demonstrates that..."
• "This evidence reinforces the argument that..."
• "This is precisely why..."