Southeast Asian Countries Experience High Temperatures and High Humidity During

Southeast Asian countries experience high temperatures and high humidity during the monsoon seasons. This makes working conditions difficult. Because air conditioners are expensive and consume a lot of electricity, an alternative air cooler called an Eco-cooler was invented. This device does not use electricity, is made from readily available soda bottles, and works by funneling air into a room. This scenario is an example of:

A) a technological innovation that can increase labor productivity and thus increase economic growth.
B) a rise in productivity causing an increase in technology.
C) a decrease in the labor force participation rate in Southeast Asian countries.
D) the development of human capital.