Bromelain, a digestive enzyme, is primarily found in which food?

Bromelain is a proteolytic enzyme, meaning it helps break down proteins into smaller peptides and amino acids, which aids in digestion. It is primarily found in pineapples, particularly in their stem and juice. The enzyme can promote digestion and has been studied for potential anti-inflammatory effects as well. Pineapples are unique among the listed options for their high concentration of bromelain, making them the best choice for this question. While mangoes, oranges, and kiwi are nutritious fruits that provide other beneficial enzymes and nutrients, they do not contain significant amounts of bromelain compared to pineapples. This specificity in the source of bromelain is what makes pineapples the correct answer.