The answer is D.
Hope I helped
        
             
        
        
        
Answer:
Since incident wave and its reflected part in opposite phase superimpose on each other
So correct answer will be
Option B
Explanation:
Here we know that the wave reflection is done by rigid boundary
So when wave is reflected by the boundary then its phase is reversed by 180 degree
so the reflected wave is in reverse phase from the boundary
so we can superimpose the reflected part with incident wave to dine the resultant wave
So the phenomenon is given as follow
 
        
             
        
        
        
Ionic bond.
In the ionic bond one atom loses one or more electrons, leaving the atom with positive charge, and the other atom accepts those electrons standing with negative charge.
        
             
        
        
        
Answer:
An object is in motion if it changes position relative to a reference point.
Explanation:
 
        
             
        
        
        
<span>The answer would approximately be 299,741.60</span>