Final answer:
The sentence that misuses a contraction is 'd. We all got flu shots so that we could avoid being I'll this winter,' where 'I'll' should be 'ill', as it refers to not being in good health and is not a contraction.
Step-by-step explanation:
The question deals with the use of contractions in English sentences. A contraction is a shortened form of a word or group of words, with the missing letters often replaced by an apostrophe. The correct use of contractions is essential for proper grammar in writing.
Looking at the sentences provided:
- a. I'm thinking about giving the pencil to him.
- b. We're going to visit a variety of new places.
- c. Sarah said she'd like to see more of the marine life.
- d. We all got flu shots so that we could avoid being I'll this winter.
The sentence that uses a contraction incorrectly is d. The contraction I'll stands for I will, but the sentence requires the word ill, which means not in good health. There should be no contraction here, hence no apostrophe is needed.