Question

Locate the gerund and identify its use. He wrote a book on the fine points of running. subject direct object predicate noun object of a preposition

Answer 1

The answer is object of the preposition. This is 100% correct.

Answer 2

The gerund in the given sentence is the word "running". The gerund word is used as an object of a preposition. A gerund is a word that takes the verb form in -ing, but functions as a noun in the sentence. The word "running" is used as an object of the preposition because it is preceded by the preposition "of".