Dr. mcintosh emphasizes that depression involves the interactive influences of self-focused negative thinking, rejection from others, and low serotonin levels. the professor's emphasis best illustrates the

answer; /// i believe the correct answer is (b) disposition

every society, in order to meet the needs of it's people, has to answer three basic questions:

- what should we produce?

- how should we produce it?

- for whom should we produce it?

this questions must be answered in order to, option b, aid in production decisions.

every country can't produce everything, no matter how rich their land is. it may be a matter of technology, resources or geographical conditions. so, these three questions must be resolved in order to get the most of the production of each land.

hope this !