-Which US president greatly increased private energy and mineral development and timber cutting on public lands,and reduced funding for research on renewable energy sources? 

A)  Carter 
B)  Kennedy 
C)  Nixon 
D)  Reagan

Renewable Energy Sources

Sources of energy that can be continuously replenished through natural processes, including wind, solar, hydroelectric, and geothermal.

Reagan

Ronald Reagan, the 40th President of the United States, serving from 1981 to 1989, known for his conservative policies.

Timber Cutting

The process of cutting down trees for use in construction, furniture making, and other purposes, often leading to deforestation.