In java, string[] indicates:
a. series of strings.
b. local parameters of series of strings.
c. formal parameters of series of string.
d. array of strings

D. Array of strings

Explanation:

In Java, strings are objects, and also constants, their value cannot be changed. A string class contains a collection of objects, that class is provided by Java to create and manipulate strings. String class is defined as a sequence (or array) of characters.

The answer is D. Array of strings