Yeah lowkey i think it’s B
        
             
        
        
        
Auroras are frequently seen :  B. After solar flares
The Aurora is created by an ongoing influx of particles into the Earth's  existing magnetic field,
 This particles originated from the Sun as part of Solar wind
hope this helps
        
             
        
        
        
The answer is 22.1925 I hope you get right let me know I got my answer because I multiply it all together.
        
                    
             
        
        
        
The buoyant force or upward buoyancy force