1. what is the underlying principle shared by advocates of the consumer movement?

There are Three consumer movement principles;

1) Critical Awareness

2) Involvement action

3) Ecological responsibilities

The underlying principle must be the Ecological responsabilities because there would be heightened sensivity to impact of consumers desicionsoc the phisical environment, Which must be developed in harmonious way for promotin conservation, have to fight against the degradation of critical factor to improve the real quality of life.

c: in the east might be the correct answer