I NEED THIS ASAP! According to the video, the work of Heating and Air Conditioning Mechanics and Installers combines the skills of which workers? Check all that apply.

Pump Operators
Plumbers
Electricians
Refrigeration Specialists
Power Plant Technicians
Hydroelectric Production Managers

Acompetitive market in healthcare would a. overprovide healthcare because the marginal social benefit of healthcare exceeds the marginal benefit perceived by consumers b. underprovide healthcare because it would eliminate medicare and medicaid c. underprovide healthcare because the marginal social benefit of healthcare exceeds the marginal benefit perceived by consumers d. overprovide healthcare because it would be similar to the approach used in canada