C because "their" is possessive.
Answer:
In My words you can open up doors, helping them find things, and if they are elders please help them no matter what cause it always come back to you.
Explanation:
It is a word and sometimes a phrase which explains or modify or clarifies a word not clearly mentioned in a sentence... like after doing the homework,match was resumed... doing is action and there is no subject of main clause,,here doer is not clearly stated ..so the phrase is dangling modifier..
