Some of china���s trading partners, such as the united states,
a. have completely ignored the issue of human rights.
b. have praised china for its human rights record.
c. have used sanctions to pressure china to improve its human rights record.
d. have refused to stop trade with china for any reason.

"choosing is refusing" means individuals face an opportunity cost with each decision they make. economists state that every decision involves trade-offs. opportunity cost is the least desirable alternative given up as a result of a decision.

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