Given,
The number is -1/2.
As the number is in negative form, so it cannot be natural number or whole.
The natural numbers are those number which starts from 1 and the whole number are those number which starts from 0.
On simplifying the number it will give - 0.5 which is not integer form.
So, the number is not integer.
Thus, -1/2 is a rational number.
Hence, option A is correct
