Rhonda manages wildlife samples for ducks unlimited. two samples of duck populations at a migratory site are shown in the table below. which statement about the samples is true?

a. rhonda needs to continue taking samples of ducks until both samples have at least one of each type of duck.

b. rhonda should take a third sample and then use the two that are most representative since these samples vary quite a bit.

c. rhonda should use both of these samples as they are to make inferences about the average population of each type of duck in the pond.

d. both samples must be biased because there are more mallards than any other type of duck recorded in the sample.