Final answer:
The measure of the number of people dying in a given time period is an example of a mortality rate, which is a key statistic in epidemiology reflecting deaths in a population over a given time.
So, the correct answer is 1) Mortality of disease.
Step-by-step explanation:
The measure of the number of people dying in a given time period is an example of mortality rate. Mortality rate is a key epidemiological metric and is commonly used to reflect the number of deaths due to a particular disease in a population over a specific period of time. This rate can be expressed either as a percentage of the population or by a number per standardized portion of the population, such as per 100,000 individuals.
So, the correct answer is 1) Mortality of disease.