b. 1/4 = .25, this is a rational, terminating decimal number.

c. the square root of 17 - irrational. It cannot be expressed as a fraction of two integers.

d. the square root of 9 = 3. This is a rational number because it can be represented as a fraction of two integers. 3/1.

There is no such thing as a rational terminating integer. Terminating/repeating has to do with decimals. Integers have no decimals, so aren't described as terminating or repeating.