Answer: D) The principle of the school makes decisions based on his principals.
Step-by-step explanation: two words are homophones when they are pronounced in a similar way (they sound alike) but they have different meanings and usually they also have different spellings. In the given sentences, the one that uses homophones incorrectly is option D. The homophones are "principle" and "principal." Principal is the person who is the authority of a school and principle is a belief which influences your behavior, so the correct sentence would be: The principal of the school makes decisions based on his principles