Question

color.
which part of the room is warmest according to the thermal image?
the windows and their frames
the radiators under the windows
the walls around the windows

Explanation:

Thermal images use color to represent temperature. The warmer areas in the thermal image are shown in colors like red and yellow. In the given thermal image, the radiators under the windows are likely to be the warmest as they are heat - emitting devices. The color scale on the right side of the image also supports this, as the warmest colors (corresponding to higher temperatures) would be associated with the radiators.

Answer:

the radiators under the windows