Pollen tablets are available in the market for Breeding programmes, In vitro fertilization, Supplementing food, Ex situ conservation

Pollen tablets are one of nature’s most completely nourishing foods, containing nearly all nutrients required by humans. They contain all the essential components of life – they are rich in proteins, free amino acids, and vitamins, including B-complex and folic acid. So, the correct answer is 'Supplementing food'.