Question

the works progress administration stimulated manufacturing by providing people with retirement income. encouraging artistic creativity. giving workers increased purchasing power. giving workers the right to organize and strike.

Explanation:

The Works Progress Administration (WPA) was part of the New Deal. It provided jobs, which gave workers income (purchasing power). Retirement income is from Social Security (not WPA). Artistic creativity was part of WPA's arts programs, not manufacturing stimulation. Worker organization rights came from other labor laws. So the correct reason for stimulating manufacturing is giving workers increased purchasing power.

Answer:

giving workers increased purchasing power.