Respuesta :
The phrases that are gerund phrases are option A and C.
A. A healthy lifestyle requires getting regular exercise.
C. Watching too much television may contribute to depression.
A gerund is a noun formed with a verb ending in -ing.
A gerund phrase always start with gerunds, includes modifiers and often include other objects. In addition, a gerund phrase always functions as a noun, and are always subjects, objects, or subject complements in sentences.
For example,
A healthy lifestyle requires getting regular exercise.
Watching too much television may contribute to depression.
Hope it helps!