Wave of option A has the highest frequency. 
Option A. 
<h3><u>Explanation:</u></h3>
Frequency is defined as the total number of complete waves in an unit time. A complete wave consists of a complete cycle of the amplitudes of waves.
In all the figures, we see transverse waves. They have the mean position denoted by a straight line, and the waves do oscillate up and down to complete a full cycle. The most number of waves in a given time has the highest frequency. If we count the full number of waves in the particular given time, Wave A has 5.75 complete waves, wave B has 3.5 complete waves, wave C has 2 complete waves and the wave D has 2.75 complete waves. So the wave A has highest number of complete oscillations in a given time. So wave A has highest frequency. 
 
        
                    
             
        
        
        
The answer is C. Aromatase
        
             
        
        
        
<span>Altostratus Clouds, they are thin enough to see through :)</span>
        
             
        
        
        
Answer:
1. Esophagus or Oesophagus
2. Stomach
3. Small intestines
4. Large intestine and anus.
The solid organs of the digestive system are:
1. liver 
2. Pancreas
3. Gall bladder.