DON'T ANSWER IF YOU AREN'T SURE Which should you include in a conclusion to an argument essay?

SELECT ALL THAT APPLIES. NOT JUST ONE.

A. interesting or surprising information
B. supporting facts and data
C. a tie back to the introduction
D. a summary of the main ideas

C and D

Explanation:

A is incorrect because no new information should be added in the conclusion or else it will confuse the reader.

B is incorrect because that is actually the body or the appendix not the conclusion.

your answer is c) experiments with water vapor showed that elements combine in specific proportions.