I think it is more often, if I'm reading the question right
Answer:
C. On the day of my piano recital, I was experiencing nervousness.
Explanation:
In expository writing, a topic sentence is a sentence that summarizes the main idea of a paragraph. <em>It is usually the first sentence in a paragraph.</em> Also known as a focus sentence, it encapsulates or organizes an entire paragraph.
I would say b and c, since unfasten and clench are basically antonyms and those answers both have antonyms
The answer isn’t b. It is a because it should say are instead of is