Which statement invokes the function? Function definition Function call Function header All

Break Down the Problem

1. Identify the key terms: function definition, function call, function header, and options available.
2. Understand the distinction between defining a function and invoking (or calling) a function.

Relevant Concepts

1. Function Definition: This is the block of code that describes what the function does. It includes the function name, parameters, and the body of the function.
2. Function Call: This is the statement that executes the function. It uses the function's name followed by parentheses, possibly with arguments inside.
3. Function Header: This is part of the function definition, particularly the line that includes the function name and indicates its parameters.

Analysis and Detail

1. The function definition is crucial for establishing what the function does, but it does not actually invoke it.
2. The function call is the statement used to execute the function, thus invoking it.
3. The function header is part of the function definition and does not invoke the function when declared.

Verify and Summarize

• Since only the function call actually executes the function, the correct answer is not "Function Definition" or "Function Header."
• The option "All" would also be incorrect as it implies all statements are invoking the function.

Final Answer

Function call invokes the function.