Question

The yellowish fluid "colostrum" secreted by the mammary glands of the mother during the initial days of lactation has abundant antibodies (lgA) to protect the infant. This type of immunity is called: 

Options

• Active immunity

• Acquired immunity

• Autoimmunity

• Passive immunity

Answer 1

Passive immunity

Explanation:

In natural passive immunity, the body receives ready-made antibodies (in this example, antibodies found in colostrum) to defend itself against outside invaders.