I know it A and D I don’t know the other one but I hope this helps you :)
The answer would be: Natural, Rate
Extinction can be considered a natural process because it will happen even without human's intervention.
As a human, we could only help to accelerate or decelerate the speed of extinction, for example hunting lions irresponsibly will accelerate the speed of extinction while creating a conservation will decelerate it
I believe the answer is A, but also C sounds familiar, I hope it is one of these! If not, I truly apologize.
Answer:
Hallucination
Explanation:
Hallucination are defined by the idea that a situation / a scenario exists which in reality does not exists. In extreme situations hallucinations may also lead a person to smell or touch things that do not exist. Hallucinations are mostly caused by mental illnesses or a breakdown of the nervous system.