The term that best describes the mountain lions is secondary consumers (option A).
Consumers in ecology are organisms (heterotroph) that uses other organisms for food in order to gain energy.
According to this question, mountain lions eat deer, coyotes, and rabbit in some ecosystem. This illustrates that mountain lions are the secondary consumers of such ecosystem.
A secondary consumer can feed on a wide variety of organisms at different trophic levels.
The complete options are as follows:
a. secondary consumers
b. producers
c. primary consumers
d. decomposers