Which of the following items are present in the function header?

Question

Options

• Afunction name
• Breturn value
• Cparameter list
• Dfunction name and parameter list

• A
  10% (4)
• B
  5% (2)
• C
  3% (1)
• D
  82% (32)

Explanation

Option D is correct because a function header - the opening line of a function definition - contains exactly two components: the function name (which identifies and allows you to call the function) and the parameter list (which defines what inputs the function accepts), typically written as def greet(name, age): in Python.

Option A is wrong because the name alone is incomplete - without the parameter list, the function header is not well-formed. Option C is wrong for the same reason in reverse: a parameter list floating without a name has no identifier to call. Option B is the most common trap - the return value is produced by a return statement inside the function body, not declared in the header (unlike the return type in statically-typed languages like C or Java, which is a separate concept).

Memory tip: Think of the function header as a nameplate on a door - it tells you the room's name and what you need to bring in (parameters). What comes out of the room (the return value) is only revealed once you're inside.

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