Answer:
a - The walls of the house are warmer during the summer. Therefore, they radiate more infrared light that can serve to warm our body.
Step-by-step explanation:
The answer is Option(a). According to studies, the reason to feel warmer inside the house is the absorption of infrared radiations emitted by the walls. Also more the temperature of the body, the more the heat radiated by it. During summer the walls of the house are at higher temperature for which they emit more infrared radiations which our body absorbs and make us feel more warmer.