Answer:
INTEGER 
A is correct. 
Step-by-step explanation:
Given: -38 belong to ....
-38 is a negative number because front of number is negative sign. 
Natural number: A number from 1 to ...... those are integer or whole number. 
Whole number: A number start from 0 to .... positive integers. 
Integers: A number whose denominator is 1 or not a fraction. It is negative or positive, 
Irrational number: A number can not write as integer of fraction. In decimal it is non-terminating number. 
-38 belongs to integer because it has denominator 1 or not a fraction. 
Hence, -38 belongs to INTEGER