Which of the following is appropriately paired? Select one: a. Katona-productive thinking in geometry b. Zeigarnik-leadership research c. Duncker-candle problem d. Von Restorff-functional fixedness

Duncker-candle problem

Explanation:

Von Restorff is wrong with functional fixedness because he instead is known with the isolation effect.

Katona and productive thinking in geometry do not match

Zeigarnik effect has nothing to do with leadership research. It is instead known to be the effect that occurs when an interrupted activity is readily recalled.