PLEASE I ONLY HAVE 30 MIUNUTES TO FINISH!!!!!!!!!!!!!

When is choosing a sample from a population least likely to be appropriate? Select two options.
when the population is small
when the population is large
when the sample contains proportions of items/events/people that are different from those of the population
when the sample contains only items/events/people that reflect the population
when surveying the entire population is time consuming