B. Heat was transferred from the Sun to the snowball through radiation
Explanation:
Because the question states that the temperature was below freezing, we can eliminate choices A and C, which state that the heat to melt the snowball came from the air. If the temperatures were below freezing, then the air wouldn't have heat to transfer to the snowball. This leaves a choice between radiation and conduction. Conduction is the process by which heat/electricity is transferred by direct contact. Radiation is the process by which energy is transmitted in the forms of waves or particles through a medium like air. The sun is not making direct contact with the snowball, instead the rays from the sun are shining down and melting the snowball. Therefore, the correct answer choice is B. Heat was transferred from the Sun to the snowball through radiation.
