Question

if you want a sample to be representative of the overall population, it is important to ensure that... (select three)
you should select participants from only a predetermined portion of the population so that it is easier to select
the selection process is completely random
the sample is large enough
the questions being asked must be leading questions
the sample is as small as possible
everyone from the population must have an equal chance of being selected for the sample

Explanation:

A representative sample mirrors the characteristics of the overall population. Random selection ensures no bias, a large - enough sample size reduces sampling error, and equal chance of selection for all members of the population maintains fairness and representativeness. Leading questions introduce bias and a small sample is less likely to be representative.

Answer:

The selection process is completely random
The sample is large enough
Everyone from the population must have an equal chance of being selected for the sample