In some markets for used goods:
a. the seller has more information than the buyer about the quality of the good.
b. the buyer has more information than the seller about the quality of the good.
c. the quality of used goods sold in the market will typically rise over time.
d. low-quality used goods will be underpriced.

it was known as the aztec empire. the capital was formally named tenochtitlan. *hope this .

d. i assume the underlined word is "role." reformat if it isn't.

explanation:

role is closest to part because when replacing words, "playing a vital decision," "playing a vital activity," and "playing a vital dollar" don't make logical sense. the only meaningful choice is "playing a vital part."

this fits one of merriam-webster's definitions of role: "a function or part performed especially in a particular operation or process."

answer; (b) knowledge based summaries of our beliefs and feeling about the self in particular domains;

answer; can have a long term impact on the newborn;