18. What are some examples of incentives? a. Getting a degree, passing drivers test
b. Petting a dog
c. Baring witness to a crime
d. Feeding your pet

i'd have to with d.

explanation:

well, i can't read it so i'll ask you questions about it : )

if you were a reader and you read the introduction, would you want to read more?

does it start with a question? if so, is it something you would want to read about?

and ask any friends or family for their opinion : )

answer; randomized controlled trials;