A(n) phrase ends in -ing and functions as a noun. participial infinitive prepositional gerund

A gerund phrase ends in -ing and functions as a noun.

Explanation:

A gerund phrase includes a gerund which acts as a noun in the sentences. A gerund is described as a verb which has an ending with -ing and which acts as a subject, object or complement in the sentence. The other three options, the participle phrase, infinitive phrase and prepositional phrase do not end with an -ing and functions as a  noun in a sentence.

answer: i would say he was very determined and persistent in overcoming obstacles.

explanation:   "the magician of menlo park" as he was called, liked to tell an incident that happened when he was 8 years old and came back home crying after attending school for three months because his teacher called him "sterile and unproductive". from nowadays perspective, we can say that thomas alva edison was one of the most persistent and determined man that has ever existed. when edison was 14, he contracted scarlet fever. the effect of the fever, as well as a blow to the head by an angry train conductor, caused edison to become completely deaf in his left ear, and 80-percent deaf in the other. so as you can see he had to struggle to not so many minor issues but he always succeeded.

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