Your answer should be “Prediction” :D
Do you have options or more information ?
A reason consumerism increased in the 1920s was because many working people earned more money. The correct option among all the options that are given in the question is the second option. As the earning of people increased, the power of buying goods from the market also increased. This increased the consumerism.
No, They are just as much of a human as we are. If our information is not monitored than theirs should not be either.