How do you typically end a block comment in Kotlin?

In Kotlin, block comments are denoted by a specific syntax that starts with /* and must end with */. The correct option indicates that the ending of a block comment is done using */. This syntax is common across many programming languages, making it recognizable for developers familiar with languages like Java or C.

The other options do not align with the comment syntax used in Kotlin. For example, "END" and "STOP" are not valid terminators for comments, as Kotlin has a defined structure for comments that relies specifically on the /*...*/ format. Similarly, the # symbol is used for single-line comments in Kotlin, but does not serve as a block comment terminator. Understanding the specific syntax for comments is crucial for maintaining clear and readable code, which is essential in programming practices.