When the verb commences with 'to' it is known as an infinitive verb. In an infinitive phrase, it includes the infinitive with the addition to complements or modifiers. An infinitive phrase can function as an adjective, adverb, and noun. An infinitive phrase that functions as a noun can act as a predicate nominative, subject or direct object. For instance in the above phrase,
to reduce my television and computer time.
'to reduce' is an infinitive, functioning as a noun, acting as a predicate nominative.
Hence, the best description for the above-underlined phrase is B) an infinitive phrase that functions as a noun.
