Answer:
Option A ,the US is a net exporter of fossil fuels
Explanation:
In the recent time, the prices of fossil fuels (i.e crude) oil fell very low due to which the prices of processed petroleum products such as petrol, diesel, etc reduced to the a very low value in last 30 years. This all happened because new oil reserves have been explored in US due to which the the price of crude oil has dropped globally.
In developing countries like India, price of petrol and diesel is one of the political agenda.
Thus, fossil fuel use in the United States make the u.s. vunerable to the political wishes of foreign countries
Option A is correct