When a void function is called, it is known as an executable statement. a comment. a returned value.

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When a **void function** is called in programming (for example, in languages like C, C++, or Java), the call is treated as an **executable statement**. Here's a breakdown of the options:

1. **An executable statement**: **Correct.** Calling a void function performs actions defined within the function but does not return a value. The function call itself is treated as a standalone statement in the code.

2. **A comment**: **Incorrect.** Comments are non-executable parts of the code meant for documentation and are ignored during program execution.

3. **A returned value**: **Incorrect.** Void functions do not return any value. They perform operations but do not provide a value back to the caller.

**Example in C++:**

```cpp
#include 
using namespace std;

// Void function
void greet() {
    cout << "Hello, World!" << endl;
}

int main() {
    // Calling the void function as an executable statement
    greet(); // This is an executable statement
    return 0;
}
```

In the example above, `greet();` is an executable statement that calls the void function `greet()`. It performs the action of printing "Hello, World!" to the console but does not return any value.

**Conclusion:**  
When a void function is called, it is known as **an executable statement**.

**Answer:**  
an executable statement.
When a void function is called, it is treated as an **executable statement**.

When a void function is called, it is known as an executable statement. a comment. a returned value.

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