Which would be the best concluding sentence for this paragraph?

C. These similarities and differences make the presence of life on Mars a possibility.

Explanation:

this sentence^ is the best conclusion for the paragraph. the other ones do not make as much sense.

early in the paragraph, we can read the sentence: There is, therefore, a likelihood that life may exist there in the future.

it states the same idea as answer c.

i hope this helped you

d

explanation:

the correct answer is the following.

one of the groups i belong to is the boy scouts. this is a problem-solving group because it has tasks that we need to solve in order to other people in different activities such as the rescue of lost pets, or elder people in need.

the other group i belong to is kids pro environment, and is an information-sharing group that tries to create conscience about the risks and problems that generate pollution in our cities. we share information to other students and parents on the importance of keep our communities clean and our skies clear.