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.
<span>The answer is letter D. <span>
<span>The best
time to exercise differs for each individual. Some people are more active in
the mornings than in the afternoons because the body is well rested from the
good night's sleep. Others find it more energizing to work out in the later
afternoon after all the tasks for the day has been accomplished because they
seem to find that exercise reduces stress. Others choose different parts of the
day for their workout to fit their schedules. There is actually no known best
time to work-out, what matters is individuals find the time to engage in
physical activity to maintain a healthy lifestyle.</span></span></span>
