Convergent faults
can form mountains and volcanoes
happen when tectonic plates move away from one another
create new oceanic crust through sea-floor spreading
happen when tectonic plates stop moving

The answer would be:

Can form mountains and volcanoes.

If you'd like to know more about convergent faults read on:

Convergent faults or convergent plate boundaries are areas where two tectonic plates move towards each other.

Mountains form when two continental plates collide.

Volcanoes form when an oceanic plate and a continental plate collide and the oceanic plate slides under the continental plate.

well for one plants are always the producer, so a is the answer. a wolf is more of the consumer(predator) and the deer is the prey so i know those two are out of the question. also mushrooms are fungi/fungus so a is the producer.