Answer:
one: know what the whole project is about i.e that's know if it's educational,talking business contemporary issues etc
two: check for topics in the internet.
three : when that's done, you check on recent videos on the topic
I believe that is the subordinate clause, because it needs the first part of the sentence to be used, and the first part needs the underlined portion to make sense. So it is a subordinate clause.
B because it rhymes with mangus and megas and I had the same homework
Would recommend using people, or as stated. hope this helps, i’m sorry if it doesn’t