In the function declaration shown, the mechanism used to call this function is known as: double pow(double base, double exp). pass by name call by value by name pass by value

In the function declaration `double pow(double base, double exp)`, the mechanism used to call this function is known as **pass by value**. ### Explanation: 1. **Pass by Value**: This means that when the function is called, the values of the arguments are copied into the function's parameters. Any changes made to the parameters inside the function do not affect the original arguments. 2. **Pass by Name**: This is a mechanism where the actual parameter is substituted for the formal parameter in the function body. This is not commonly used in most programming languages. 3. **Call by Value by Name**: This is not a standard term and is not applicable in this context. In summary, since the parameters `base` and `exp` in the function `pow` are passed by value, the correct answer is **pass by value**.