Correct Answer: C

Rationale: Poliomyelitis is the correct answer as it is one of the diseases targeted for eradication through the Expanded Program on Immunization (EPI). The EPI aims to control and eliminate vaccine-preventable diseases globally, with a specific focus on polio due to its severe consequences and the feasibility of eradication through vaccination campaigns.

Correct Answer: C

Rationale: Antiretroviral therapy is a crucial strategy in preventing mother-to-child transmission of HIV. By providing antiretroviral medications to the mother during pregnancy, labor, and breastfeeding, the risk of transmitting the virus to the child is significantly reduced. This treatment approach has been shown to be highly effective in reducing the likelihood of HIV transmission from mother to child.

Correct Answer: C

Rationale: The primary focus of the Integrated Management of Childhood Illness (IMCI) strategy is the prevention and treatment of major childhood illnesses. The IMCI strategy aims to reduce child mortality and morbidity by emphasizing a holistic approach that includes preventive measures along with curative interventions.

Correct Answer: C

Rationale: Vaccination is the most effective method for preventing the spread of infectious diseases as it helps in developing immunity against specific pathogens, reducing the likelihood of infection and transmission within a population. Antibiotics are used to treat infections, not prevent their spread. Quarantine limits the contact of infected individuals but does not provide long-term prevention. Nutritional supplementation can support overall health but is not a primary method for preventing infectious diseases.

Correct Answer: D

Rationale: Folic acid is a crucial nutrient required for preventing neural tube defects during pregnancy. It plays a vital role in the development of the neural tube in the fetus, reducing the risk of defects such as spina bifida and anencephaly. It is recommended that women of childbearing age consume adequate amounts of folic acid, either through diet or supplements, to support a healthy pregnancy and prevent these serious birth defects.