Correct Answer: D
Explanation:
The clue here is rather than encourages. You need a verb whose object is proliferation and that means the opposite of encourages. The best choice is impedes, which means obstructs or retards. To invert is to turn upside down.
Proliferation : | to reproduce (new parts) in quick succession |
Impedes: | to bar or hinder the progress of; obstruct or delay |