If a number is a member of the set of integers, then it must also be a member of which other set? a.)rational b.)counting numbers c.)whole numbers d.)not here

rational

by definition, a rational number is a number that can be written as a fraction with the numerator and denominator as both integers.

if a number n is an integer, then it can be written as n/1, which is a rational number. e.g., 5 is the same as 5/1 (and -5/-1), -3 is the same as -3/1 (and 3/-1) and so on.