Answer
(a)
Work Step by Step
As of $2023$, the largest source of electricity generation in the United States is natural gas, accounting for approximately $43\%$ of utility-scale electricity generation. This is followed by coal at $16\%$, nuclear at $18.6\%$, and renewables at $21.4\%$, which includes wind, solar, hydropower, and biomass.
The answer is (a).
