D, I think.
Because the bedroom is closer to the windows where is cold and wind went through, while the kitchen is a hot spots.
Answer:- 71.7 calories
Solution:- it is a unit conversion problem where we need to convert joules into calories.
The unit conversion for these energy units is:
1 calorie = 4.184 joule
The given energy is 300 joules and has to be converted to calories. We will show the set up using dimensional analysis.

= 71.7 calories
So, the energy in calories is 71.7.
A should be the products and D should be the reactants. So D should be the answer.