What type of comment allows for multiple lines in Java?

The correct choice is the type of comment that is represented by the symbols "/" to begin a comment and "/" to end it. This format is specifically designed to span multiple lines, allowing programmers to write more detailed explanations or notes within the code. It is particularly useful for commenting out large blocks of code or providing extensive documentation directly in the source code.

In Java, multi-line comments do not affect how the program runs, and any text enclosed within these symbols will be ignored by the compiler. This feature is valuable for adding comprehensive documentation or temporarily disabling sections of code during debugging.

Other types of comments exist in Java, such as single-line comments that start with "//," which only apply to the line on which they appear, and documentation comments that use the "/**" format for generating external documentation. Preprocessor directives are not used in Java; they are more common in languages like C or C++, and therefore are irrelevant in this context.