The quote states that we should be using solar energy before our limited amount of naturally occurring oil and coal runs out. Meaning; we should be proactively working towards solar power rather than to wait for our resource to run out to start.
Amount of sunlight, distance from equator, and height above sea level
I think your answer would be biomass. If the earth uses too much of it, it will take too long to replenish. Hope this helped could I possibly get brainliest?
The answer to the question is B