Which feature of the sun is a section that is cooler than its surroundings? corona prominence solar flare sunspot

Sunspot. Sunspots are temporary cooler areas on the Sun's surface caused by changes in its magnetic field.

It would be D. Sunspot

1) when you rub your hands together quickly, the kinetic energy is converted to mechanical energy.2) thermal energy from the sun travels to earth as infrared waves.3) energy is transferred through the matter of space by electromagnetic waves. 4) when a match is burned, chemical potential energy is converted to thermal and radiant energy. 5) seismicwaves are caused by back and forth movement , or vibration, of an object. 6) mechanicalenergy in an engine changes thermal energy into kinetic energy to make a car move.

The answer is a.  i hope this