Answer:
a. nonactivist; activist
Step-by-step explanation:
The notion of the self-regulating market suggests that the economy balances according to the interaction between productive factors, capital, labor, and technology, so that government should intervene as little as possible. The economists who support this thesis are the liberals (not activists).
On the contrary, other economists do not believe in the self-regulatory capacity of the market. To this end, a government must be active in inhibiting market distortions. This is done through economic policy. These are considered the "activist" economists.