Heat transferred outward from the surface of the moon can take place by:

Convection
Conduction
Latent heat
Radiation

The correct answer is D. Radiation.

Convection is the transfer of heat by the movement of fluids. Conduction is the transfer of heat between two objects that are in direct contact with each other. Latent heat is the heat that is absorbed or released when a substance changes its state of matter. Radiation is the transfer of heat through electromagnetic waves.

The moon has no atmosphere, so there is no convection or conduction. The only way for heat to transfer outward from the surface of the moon is through radiation.