Answer:
toString() is the correct answer to the following question.
Explanation:
ToString() function is the built in function that is used to convert the number into the string.
For example:
int n=25
var s=n.toString()
Here, we define an integer data type variable "n" and assign value to "25" then, we define the string data type variable "s" and assign n.toString() to convert number into string.