Which sentence presents a clear thesis in an introductory paragraph?

• A. There are many issues with the current plan.
• B. This essay will discuss the plan's strengths, weaknesses, and potential improvements.
• C. The plan has strengths and weaknesses.
• D. The paper analyzes several aspects of the plan.

Answer: (B)

A clear thesis in an introductory paragraph should present a definite claim and show what will be analyzed or argued. The sentence that says the essay will discuss the plan's strengths, weaknesses, and potential improvements does exactly that: it states the purpose (to evaluate the plan) and outlines the scope of the analysis (what will be examined). This gives readers a precise expectation for the argument and how it will be developed. The other options tend to be vague or merely describe what the paper will do without making a specific, debatable claim to support.