Secretions of exocrine glands are called
enzymes
The correct option is B.
Explanation of the correct option:
Explanation of the incorrect options:
Option A:
Hormones are secretions of endocrine glands.
Option C:
Vitamins are present in the diet an organism takes or consumes.
Option D:
Proteins are also the dietary supplements of the organisms.
Final answer: Secretions of exocrine glands are called enzymes.