Which of the following statements is true regarding a representative sample?

A.
It is at least 1/2 of the total population.

B.
It focuses on a specific group within the population.

C.
It is a group that is fairly proportional to the population.

This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?