Answer:
c. A relatively large group selected to include as many individuals of interest as possible
Explanation:
The population can be defined by several characteristics used to conclude a specific subject in population. It can vague and specific. For example, several newborn babies in America with a blue eye is a specific population which studied the blue color of eyes. Most of the researcher wants to know the characteristics of every entity in a population so can get a very precise result of the population.
Sample: A sample is a small and manageable group of a large population. It can be called a subset of a large population that describes the entity characteristics of a population. It can be called a pilot study.
Both the term sample and population are the most important part of a research. A population is a vast group and sample is a small group to represent a population.