Identify the misfit (Odd-One-Out)

Five figures are shown:

• A: a black square with a white circle in the centre
• B: a black triangle with a white circle in the centre
• C: a black pentagon with a white circle in the centre
• D: a white hexagon with a black circle in the centre
• E: a black hexagon with a white circle in the centre

Which shape is the odd one out?

Mark scheme (1 mark):

• Correct answer: D (1 mark)
• Rationale (not required from candidate): D is the only figure with a white outer shape and a black inner circle; all others have a black outer shape and a white inner circle. Shading is the invariant rule.