Question

1. select the answer that properly completes the sentence.

an ____ wings are made of a substance called \chitin.\

insects

insects

insects

insectss

Explanation:

The sentence uses "an", which requires a singular noun. "insect's" is the singular possessive form, showing that the wings belong to one insect. "insects'" is plural possessive, "insects" is plural (no possession), and "Insects's" is incorrect grammar. So "insect's" fits.

Answer:

B. insect's