Explanation

The route through which food is directly given into the veins is called parenteral nutrition.

This method involves delivering nutrients, such as:

• carbohydrates,
• proteins,
• fats,
• vitamins,
• minerals,

This mineral is directly delivered into the bloodstream through a catheter inserted into a vein.

It's typically used when:

• a person cannot consume food orally 
• absorb nutrients through the digestive system adequately.