Capitalism rewards hard work with higher wages. this policy increases the number of people belonging to the

worker unions
middle class
working class
transnational corporations

Capitalism rewards hard work with higher wages. This policy increases the number of people belonging to the worker unions. Option A is correct.

Worker unions are groups of workers associated to create a legal unit usually  which acts as bargaining agent and legal representative for a unit of employees.

Capitalism refers to an economic system with basis on the private ownership of the means of production and their functioning to make profit.

b. used to hunting for their food.