Which response core capability involves providing life-sustaining and human services to the affected population, to include hydration, feeding, sheltering, temporary housing, evacuee support, reunification, and distribution of emergency supplies?
a. mass search and rescue operations
b. public health, healthcare and emergency medical services
c. infrastructure systems
d. mass-care services

The correct answer is option - D. mass- care services.

Explanation:

Mass care service is the response core capability that includes human services and life-supporting or sustaining to the population that is affected. It involves temporary housing, sheltering, reunification feeding, hydration and distribution of emergency supplies.

Mass care services are an emergency response core capability that provides all necessary for the affected population.

Thus, the correct answer is - option - D. mass- care services.