LSAT Practice Test 2025 - Free LSAT Practice Questions and Study Guide

In LSAT formal logic, the term "Every" highlights the concept of a Sufficient Condition. When a statement begins with "Every," it usually indicates that the condition that follows is enough for the conclusion to be true. This is because in logic, if every member of a group has a certain characteristic, then possessing that characteristic is sufficient for being a member of that group. This is why the correct answer is D.

Regarding the other options:

A. Conclusion - In formal logic, the term "Every" does not specifically highlight the conclusion. It often introduces the condition that is sufficient for the conclusion to be true.

B. Necessity - While the concept of necessity is important in formal logic, the term "Every" does not specifically highlight necessity. It focuses more on sufficiency.

C. Mutually Exclusive - The term "Every" does not necessarily indicate that the conditions are mutually exclusive. Instead, it typically emphasizes the sufficiency of a certain condition for a conclusion to be true.