Answer:
The correct answer is letter "B": Changes in lifestyle.
Step-by-step explanation:
Consumers' decisions are driven by many factors of products such as price, quality, and availability but some factors depend directly on the customers to chose one good over another such as their needs, expectations, income, and lifestyles.
In the example, mothers' lifestyles over time have changed. Every day it is more often to see working mothers implying they have an income that allows them to purchase better formula for their babies, larger quantities of diapers, or finance large vehicles so all the children in the family can travel more comfortably, for instance.