Question

when conducting a population sampling study, what do you expect to happen after you release the tagged individuals?
that they will die quickly
that they will spread evenly and do not die

Explanation:

In a population - sampling study using the mark - recapture method, the assumption is that tagged individuals will spread evenly throughout the population and not die prematurely. If they die quickly, it will bias the results of the population size estimate.

Answer:

That they will spread evenly and do not die