Assuming the underlined word is 'singing,' the correct answer is going to be A. participle.
A participle and a gerund look the same - they both end in -ing. However, participles are used as adjectives (as is the case here), whereas gerunds are used as nouns. Infinitives always have the same form, which is TO + verb.
Martin Luther King assasinated, Robert kennedy wounded.
B.Followers of the social gospel movement focused on making life on Earth better, while the evangelicals focused on the rewards waiting in heaven,
3) The pamphlet supported natural rights as essential for the colonists. I think :)
