Pronoun reference. It is not clear whether “he went home” refers to Jeff or his brother.
An adverb clause is a group of words that function as an adverb. For example: "Unless you run fast, you will miss your bus." The bold words are part of the adverb clause.
Yes because gender segregation won’t help anyone
I'm pretty sure a metasearch engine is a tool that stores information that is on the WWW. (world wide web)