An example of $\_\_\_\_\_\_\_\_$ is the introduction of a new smart phone that results in the consumer rejecting the still functional older version of the device. This is a practice that needs to be $\_\_\_\_\_\_\_\_$ in the quest for a sustainable environment.

Select one:

a$.$

product longevity; nurtured

b$.$

technological innovation; increased

c$.$

psychological obsolescence; scrutinised

d$.$

repeat$-$purchase penetration pricing; discontinued