Answer:
C. complete or make an addition to daily dietary intake.
Explanation:
Dietary supplements are substances that complete or make an addition to daily dietary intake. They are products consumed orally which supplement the body due to the presence of some essentials components such as amino acids, vitamins, minerals(present in calcium and iron supplements) etc. They helps to provide nutrients to the body and also nourishes the body. Above all, Dietary supplements are designed to be taken in conjunction to what we eat in order to promote health.