Correct Answer: B

Rationale: The World Health Organization (WHO) recommends exclusive breastfeeding for the first 6 months of life. This means that infants should be fed only breast milk (no other liquids or solids) during this period to ensure optimal growth, development, and health benefits.

Correct Answer: C

Rationale: The first dose of the MMR vaccine is typically administered to a child at 12 months of age to provide protection against measles, mumps, and rubella. Administering the vaccine at this age ensures that the child's immune system is developed enough to generate a protective response to the vaccine.

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: B

Rationale: A sunken fontanelle is a common sign of dehydration in infants. The fontanelle is the soft spot on an infant's head where the skull bones have not yet fused. When an infant is dehydrated, the fontanelle can appear sunken or indented. It is important for caregivers and healthcare providers to recognize this sign promptly to ensure timely intervention and hydration for the infant.

Correct Answer: B

Rationale: The correct answer is 'Airborne.' Tuberculosis is mainly transmitted through the air via respiratory droplets when an infected person coughs or sneezes. This allows the bacteria to be inhaled by others and infect their lungs. It is important to implement infection control measures to prevent the spread of tuberculosis in healthcare settings and the community.