Answer: d. businesses that cater to older consumers will see higher growth
Explanation:
The trend in the Developed World is that of lower birth rates and higher life expectancies. This has and will keep leading to more of the population being from the Older generation. This is a population shift towards the older generation.
Should this happen, Businesses and products that were made for the older generation will see their business grow as they will have more customers which equates to more demand which equates to higher profitability.