When she is asked what she should do when a friend does a favor for her, Marnie says, "I usually don't let anyone do favors for me. I don't like the idea that I would owe them something." Marine would describe people who do favors for her as

a. reciprocators.
b. creditors.
c. assessors.
d. debtors.

what is the answer

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.

answer; the candidate for vice president;