What's the greenhouse effect?

a. the regulation of atmospheric and surface temperatures

b. human-caused global warming

c. the trapping of warm air in cities

d. the release of extra moisture from water vapor

dont just guess ​

Answer b is the answet

Answer( solar wind );

It’s a.
The greenhouse effect is how we Earth’s climate has remained habitable for humans and other species.
Gases absorb solar energy and keep the heat close to earths surface, rather than letting it escape into space.