Having fallen out of the nest, the bird was insensible at first, but then flew off.

In “insensible,” the prefix in- means “not,” the root sens relates to feeling, and the suffix -ible means “able to be.” Together, these parts describe someone or something that is not able to feel or respond. So the correct choice is “the prefix in-, the root sens, and the suffix -ible.”

AI-written and checked against the verified answer.