Correct option is (C) Three years
Explanation: Children's development varies, but generally, wordplay, jokes, and riddles that involve a play on words start becoming appealing and understandable to children around the age of 3 or 5. At this age, most children have developed a sufficient grasp of language, vocabulary, and abstract thinking to appreciate the humor in wordplay and enjoy jokes that rely on double meanings, puns, and clever word manipulation.