The correct answer is C. The break statement is a keyword in the C++ language. It is used to terminate the execution of a loop or switch statement.
A preprocessor directive is a command that is used to control the translation of a C++ program. It is not part of the C++ language itself.
An operator is a symbol that is used to perform an operation on operands. For example, the + operator is used to add two operands.
A switch statement is a control flow statement that allows you to select one of several possible statements to execute, based on the value of an expression.
None of the above is not a valid option.