Question

a huge rock at the state park gets so hot during the day because of
radiation
convection
conduction

Explanation:

Radiation is the transfer of heat energy through electromagnetic waves. The sun emits radiation which heats the rock. Convection involves the transfer of heat through the movement of fluids (liquids or gases). Conduction is the transfer of heat through direct contact between substances. The rock gets hot mainly due to the sun's radiation.

Answer:

radiation