Since, the options are not given the question is incomplete. The complete question is as follows:
Presentation of a rewarding stimulus serves as ______, while removal of an aversive stimulus serves as ______.
a. negative punishment; positive punishment
b. reinforcement; punishment
c. positive reinforcement; negative reinforcement
d. negative reinforcement; positive reinforcement
e. positive punishment; negative punishment
Answer: c. positive reinforcement; negative reinforcement
Step-by-step explanation:
Both positive and negative reinforcement are the parts of conditioning. In positive reinforcement the subject is awarded for the particular sets of desired behavior but it is opposite for the negative reinforcement the subject is punished for undesired behavior.
In positive reinforcement favorable stimulus is chosen by the subject which made the subject to avail the reward whereas in the negative reinforcement , the aversive stimulus is intended to reduce the undesired behavior by punishment.