For what semester? And what grade?
d. the difficulties of being a man
A participle is a word formed from a verb.
Like going, gone, being, or been.
It can also be an adjective like working woman, burned toast. (A verb being used as an adjective).
Gertrude Stein, patron of the arts, was a voluble conversationalist when artists and writers visited her Paris apartment in the 1920s and 1930s.
Form google dict., voluble means <em></em><span><em>Speaking or spoken incessantly and fluently.</em></span>
The answer to your question is A. - Them because you are referring to the crumbs and just not something random, in which case you would use "it".
I hope this helps you!
Have a great day!!