Answer:
The correct option is A. The word “less” is an adjective that tells how much.
Explanation:
An adjective constitutes a word class that modifies a noun or a pronoun. In English, there are several types of adjectives. Among them, it is possible to highlight the attributive adjective, which usually comes before the noun that it modifies without using a linking verb.
Bearing the above in mind, it could be said that in the sentence: <em>"Studying for the test took less time than Manuel had imagined"</em>, the word “less” is an adjective that tells how much. Furthermore, the word “less” is an attributive adjective because it precedes and modifies the noun time.