The correct answer is A. Buy things to show off.
Step-by-step explanation
Consumerism is a trend that emerged during the twentieth century in parallel with the emergence and establishment of capitalism. Consumerism is based on the purchase and accumulation of goods and services. Moreover, in most cases, goods are considered non-essential and they are bought because of trends or with the fundamental objective of showing this to others, in the idealized way shown by the advertising. According to the above, it is the A Buy things to show off.