B may be the answer.hope it helps you
Self intrest and exchanging things for mutual benefit
The correct answer is extrinsic motivation.
Extrinsic motivation refers to behavior that is driven by external rewards. In other words, the motivation to engage in a behavior arises from the outside sources because it is naturally satisfying to them. Practically, the behavior is driven by a reward given by someone or something else if the particular thing is done correctly. In this example Brenda is motivated to study more because she wants to earn an A, thus a reward for her effort of studying.
Googolplexian.
EXPLANATION
Many people mistakenly consider Googolplex as the largest, but it is only the second one with a name. Googolplex is a "1" followed by a googol of zeros.
Googolplexian, on the other hand, is the worlds largest number with a name. It is a "1" followed by a googolplex of zeros.
