<em>B. Parallelism</em>
Explanation:
Parallelism is the act in which some of the same words are used over and over to create a point or reiterate the same points to make it more viable, the same concepts will be repeated but with slightly different wording. The Declaration of Independence uses parallelism to make points come across as more serious, and for people to understand the concept completely. Repeating the word "that" is just one example of the use of parallelism in the Declaration of Independence, there are many more evident in it as well.
I think it's A but i could be wrong
