18.

Answer and Explanation

Your Answer is

Correct Answer is F

Explanation

The main sentence is Jim Chow laws forced, so the underlined part can no longer be a complete sentence, H/J is wrong.

Although there is a period in item G, there is no predicate verb after the period, so it is wrong.

F item resulting in... guides the result adverbial, modifies the main clause, and the grammar is correct.