Question

how was solar power first used by ancient greeks and romans?
provide transportation
circulate air
to cook food
power light

Explanation:

Ancient Greeks and Romans designed buildings with south-facing windows and used reflective surfaces to capture solar energy for heating spaces, which involved circulating warm air, and they also used solar power for cooking, but the most well-documented early solar use among these options is for cooking with solar concentrators and focused sunlight.

Answer:

to cook food