Question

what is radiation most responsible for?○ the greenhouse effect○ heating the inner core○ heating the atmosphere○ heating the outer core

Explanation:

The greenhouse effect is driven by greenhouse gases trapping heat, not radiation. Earth's inner and outer core heat comes from radioactive decay and residual formation heat, not the solar/atmospheric radiation referenced here. Solar radiation is the primary source that heats the Earth's atmosphere, either directly or indirectly via surface heating.

Answer:

heating the atmosphere