Assuming the underlined verb form is masquerading, the correct answer is B. gerund.
Although gerunds and participles look the same (both have the form verb + -ing), the difference is in their function - participles are used as either adjectives or adverbs, whereas gerunds are used as nouns within a sentence.
Answer:
Volunteer work is important for your health. The Corporation for National and Community Service says that volunteering improves psychological and physical health. Volunteers reap the benefits of feeling a personal sense of accomplishment while building social networks that, in turn, support them in times of stress.
my classroom is the cleanest
