Which best explains what determines whether a number is irrational

Question

responses
a number that can be written as a square root that does not result in a whole number
a number that can be written as a decimal that terminates, and does not repeat
a number that can be written as a decimal that repeats, and does not terminate
a number that can be written as a decimal, that neither repeats nor terminates

Answer 1

The correct response is:
a number that can be written as a decimal, that neither repeats nor terminates.