Question

Is the verbal Skydiving an infinitive, participle, or gerund?

Answer 1

The gerund ends in -ing and functions as a noun. The infinitive is the base form of a verb with to. A participle is a verb that ends in -ing (present participle) or -ed, -d, -t, -en, -n (past participle). Participles may function as adjectives, describing or modifying nouns. Therefore i'd say it would be participle

Answer 2

the word is infinitive