I am not for sure but I think the answer is "A"
b. The research focus may change as the reader begin to delve into the topic.
It believe the answer is the second choice, "have a subject and a verb."
Independent clauses are complete sentences, which knocks out the third and fourth option.
Dependent clauses are not complete thoughts, knocking out the first option.
Answer:
If i remeber correctly revenge has a part when tybalt kills Mercutio then Romeo gets "revenge" when Romeo kills tybalt.
Explanation: