Answer :
To address the question about which sentence correctly explains the reason for studying vocabulary words in order to perform well on a quiz, we need to evaluate each option provided:
Option A: 'You need to study your vocabulary words because you can do well on the quiz.'
- This option implies that studying vocabulary is a consequence of being able to do well, which doesn't logically explain the need to study first. Therefore, this option does not correctly convey the intended meaning.
Option B: 'You need to study your vocabulary words before you can do well on the quiz.'
- This sentence correctly indicates sequence and causation. It suggests that the action of studying vocabulary is necessary in order to perform well on the quiz. This makes logical sense.
Option C: 'You need to study your vocabulary words so that you can do well on the quiz.'
- This option also correctly explains the purpose of studying. It indicates that studying is done with the goal of doing well on the quiz. It accurately conveys the cause-and-effect relationship.
Option D: 'If you need to study your vocabulary words, you can do well on the quiz.'
- This option suggests a conditional situation and implies uncertainty about the need to study, which doesn’t fit the context of ensuring preparation for success.
Considering the logic and clarity of each statement, Option C is the most clear and purposeful expression of the need to study vocabulary in order to do well on the quiz.
