Final answer:
A 1970s conservative would most likely agree with option c. Market forces should determine wages, and government involvement should be minimized.
Step-by-step explanation:
Based on the graph "Wage Earners in U.S. Families," a 1970s conservative would most likely agree with option c. Market forces should determine wages, and government involvement should be minimized.
In the 1970s, conservatives generally supported free market principles and limited government intervention in the economy. They believed that wages should be determined by supply and demand in the labor market, without government interference. Therefore, a conservative would most likely argue against options a, b, and d, as they involve government intervention or progressive economic policies.