Marc eats a well-balanced diet and takes vitamins. Yet, test results show that Marc has a vitamin deficiency. Which of Marc’s body systems are most likely not functioning properly?

A. the respiratory and circulatory systems, because the vitamins are being released as waste

B. the digestive and excretory systems, because his body is not absorbing the vitamins in the food he eats

C. the respiratory and digestive systems, because the exchange of oxygen and carbon dioxide is being affected

D. the digestive and nervous systems, because the vitamins are not being transported to the right places in his body

On seeing the given options, it can be concluded that Marc is suffering from vitamin deficiency as his digestive and excretory systems are not functioning properly as his body is not absorbing the vitamins appropriately.

The causes of vitamin deficiency:

Vitamin deficiency generally takes place when the vitamins are not able to get absorb completely in the body. This can take place due to malabsorption syndrome, it is a condition in which the digestive system fails to absorb essential nutrients and fluids appropriately.

The nutrients, which the body fails to absorb can be macronutrients or micronutrients like minerals and vitamins. Some of the general causes of malabsorption syndrome are:

Damage to the intestine due to infection
Prolonged use of antibiotics
Diseases of the gallbladder, pancreas or liver
Some of the congenital defects

Therefore, inefficiency of digestive and excretory systems leads to non-absorption of vitamins appropriately.

Thus, the correct statement is option B.

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