The correct answer is option 3: 6. The total number of ear bones in humans is six. These bones are called ossicles and they are located in the middle ear. The three smallest bones in the human body, the malleus (hammer), incus (anvil), and stapes (stirrup), make up the ossicles. These bones play a crucial role in transmitting sound vibrations from the eardrum to the inner ear. They amplify and convert sound waves into electrical signals that can be interpreted by the brain. These three bones on each side work together to facilitate the process of hearing. Therefore, a total of six ear bones are present in the human body, with three on each side.