Question

\hello, world\ is what kind of data?
a. string
b. decimal
c. integer
d. communicative

Explanation:

In computer science (a subfield of Natural Science), a "string" is a data type that consists of a sequence of characters. The phrase "Hello, world" is made up of characters (letters, punctuation, space), so it is a string. Decimal and integer are numeric data types, and "communicative" is not a standard data type.

Answer:

A. string