Answer:
Melody is a rhythmic sequence of pitches that create a musical phrase or motif. A melody also consists of two parts: pitch and rhythm. We sometimes think of melodies as the vocal part of a song. However, a melody can also be the top line of your instrumental drop, a signature bass line, or even a unique vocal sample.
Explanation:
 
        
             
        
        
        
Answer: Liver 
Explanation:
The hepatic portal system of liver connects the capillaries of the gastrointestinal tract to the liver. The nutrient rich blood from the gastrointestinal tract reaches the liver.
The blood that is returned back to the heart is first bought to liver and then it is returned back to the heart.
From the liver after processing the blood goes into heart for further processing.
Hence, the correct answer is option d 
 
        
             
        
        
        
In order to grow your cells need to expand and divide in order for your body to grow.