Final answer:
The sentence provided is an example of the infant mortality rate, a clinical indicator that measures the number of infant deaths per 1,000 live births and reflects the health status of a population.
Step-by-step explanation:
The sentence, "The mortality rate for infants in the supplemental feeding program is 5%," is an example of a clinical indicator known as the infant mortality rate (IMR). The IMR is a health metric used to track the number of infant deaths within their first year of life per 1,000 live births in a particular region or under a certain program. This measure is a crucial indicator of the overall health of a population and is commonly used to assess and improve healthcare services and to evaluate the impact of health interventions like nutrition or supplemental feeding programs.