Correct Answer: C

Rationale: The infant mortality rate is a crucial indicator used to assess the health status of a population. It reflects the number of deaths among infants under one year of age per 1,000 live births. A high infant mortality rate is often indicative of inadequate healthcare services, poor sanitation, and other factors that impact the overall health of a population. Therefore, monitoring and improving the infant mortality rate is essential for evaluating and addressing the health needs of a community.

Correct Answer: B

Rationale: Community participation is a fundamental principle of Primary Health Care (PHC) as it involves the active involvement of individuals, families, communities, and organizations in the planning and delivery of healthcare services. This ensures that services are culturally appropriate, accessible, and acceptable to the community, leading to better health outcomes.

Correct Answer: B

Rationale: Vaccination is a preventive measure used in public health to protect against infectious diseases by stimulating the immune system to develop immunity without causing the disease. It helps prevent the spread of infectious diseases within communities and is a cost-effective way to reduce the burden of illnesses.

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.

Correct Answer: B

Rationale: The World Health Organization recommends exclusive breastfeeding for the first 6 months of a child's life. During this time, breast milk provides all the necessary nutrients for the baby's growth and development, offering protection against infections and supporting optimal health outcomes. After 6 months, complementary foods can be introduced while continuing breastfeeding up to 2 years of age or beyond.