Question

when conducting a population sampling study, what is the proper procedure you should use each time you collect a new batch of individuals? collect individuals randomly each time only count the tagged individuals

Explanation:

In population sampling (especially for methods like mark - recapture), when collecting a new batch of individuals, random sampling is the proper procedure to ensure the sample is representative of the population. The option "only count the tagged individuals" is incorrect as it would not give a representative sample of the whole population. So the correct approach is to collect individuals randomly each time.

Answer:

collect individuals randomly each time