Explanation:

- Correct Answer: None of the above (Option 4)

- The MMR vaccine is designed to protect against:

- Measles: A highly contagious viral infection that can lead to serious health complications, including pneumonia, encephalitis, and death.

- Mumps: A viral infection that primarily affects the salivary glands, potentially causing symptoms like swelling, fever, and headaches.

- Rubella: Also known as German measles, it is a viral infection notable for a rash, fever, and swollen lymph nodes and is particularly dangerous in pregnant women as it can cause congenital rubella syndrome in the fetus.

- Explanation of Options:

- Option 1 mentions Meningitis and Rota virus, which are not targeted by the MMR vaccine.

- Option 2 includes Malaria, which is not a viral infection and not prevented by the MMR vaccine.

- Option 3 lists Rickets, a bone disorder caused by vitamin D deficiency, which is unrelated to the MMR vaccine.