Q:
      
      
         
            
Sunspots appear dark because they are
         
       
      
      
      
          
      
      
          Answer & Explanation
         Answer: C) cooler than the rest of the Sun's surface.         
         
Explanation: Sunspots are a magnetic phenomenon on the Sun.

The reason a sunspot appears dark is that they are cooler than the rest of the Sun's surface and also the gas inside the spot where the magnetic field is strongest is only emitting about 1/4 as much light as from the rest of the solar surface. 
 
       
      
      
      
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