Answer:
The people who are actually measured
Step-by-step explanation:
A population is the whole group you want to study while a sample is the group chosen to partake in the study or experiment.
For example you want to carry out a study on the spending habits of millennials in the world. It is impossible to contact all the millennials in the world. The reasonable step would be to choose a sample of the people that would be representative of all the millennials in the world.
Here the population are millennials. while the representative population chosen to represent millennials are the sample