Only use colons after statements that are complete sentences. Don't use it after a sentence fragment. It may be used between independent clauses when the second sentence explains the first sentence.
Ex: He has three favorite movie genres: action, comedy, and drama.
Answer:
Their is many people around the world
The correct answer would be B. Why? The direct object is David, so not that, them is not included in a prepositional phrase, so it's not an object of a preposition, and David is the subject, and not them. Hope this helps!
Have a fantabulous day! :)
