Answer:
The correct answer is data type string.
Step-by-step explanation:
Numeric data types(int, float, double, etc) are not suitable because you cannot incluse letters, just numbers. For example.
int x = 124320 is valid
int x = 12a45re is not valid.
The data type string is the one that allows the combination of numbers and letters. For example
char password[] = "bills2019" is valid
So the correct answer is data type string.