Answer: E). Both b and d
Explanation:
Operant behaviour or conditioning which is also known as Instrumental conditioning is a type of learning process in which the strength of an organism or individuals behaviour is modified by punishment or reinforcement either positively or negatively.
Operant behavior is said to be "Voluntary" because the responses of the organism are under its control.
A common answer would be either depression or post-traumatic stress disorder.
For diets give the shogarie food away or have somone hide them from you and exercize do a small dailey workout