Please choose the correct answer to the question: Emily is riding her bicycle. Which best explains why only some of the energy used to pedal her bicycle is transferred into forward motion of the bicycle?

Answer1: The energy of the bicycle tire is applied in a circular motion. Answer2: The energy of the bicycle is transferred to only one wheel. Answer3: The gears and chain of the bicycle are covered with oil. Answer4: The gears and chain of the bicycle generate friction.

Answer format: answer1/answer2/answer3/answer4