(D) Mesocarp

The edible portion of a mango is the mesocarp, which is the fleshy and pulpy middle layer of the fruit. The outer skin (exocarp) is not typically consumed, and the inner seed (endocarp) is also not eaten. The mesocarp is the part that is juicy, sweet, and commonly enjoyed in various culinary applications, such as eating the fruit fresh, making juices, or incorporating it into salads and desserts.

The substance that causes the clotting of blood is:

(A) Thrombin

Thrombin is an enzyme that plays a crucial role in the blood clotting process. It is responsible for converting fibrinogen, a soluble plasma protein, into insoluble fibrin threads. These fibrin threads form a mesh that helps in the clotting of blood, particularly at the site of injury or wound. Therefore, option (A) Thrombin is the correct answer.