I believe this an example of complex sentence structure.
My reasoning is that most of these sentences are in fact compound complex sentences-
Compound-complex sentences contain two independent clauses and at least one dependent clause.
An example of a complex sentence is this: “I burned dinner but not the cake.”
Answer:
A.It takes a lot of different tools to fight disease.
B.Modern technology is an important part of the fight against disease.
D.Different types of scientists use different tools to fight disease.
Explanation:
It is significant because a prominent leader was suggesting that the unequal treatment of African Americans was in direct opposition to the principles of the Declaration of Independence.
The answer is b, are.
The reason is because it is the only one that fits in the sentence that makes sense!
