Question

1. the suns energy is most useful to humans after it is converted to _____.

〇 nuclear energy
〇 light
〇 radiation
〇 heat

Explanation:

The sun's core produces nuclear energy via fusion, which converts to radiation/light. This energy becomes most useful to humans when converted to heat, as heat is directly usable for heating, generating electricity via steam turbines, and supporting agricultural/industrial processes that rely on thermal energy.

Answer:

heat