Explanation:

- The human ear consists of three tiny bones called ossicles. They play a crucial role in hearing by transmitting sound vibrations.

- Option 1: Malleus - Known as the hammer, it is one of the three ossicles located in the middle ear.

- Option 2: Stapes - Known as the stirrup, it is the smallest bone in the human body and part of the middle ear.

- Option 3: Femur - This is a long bone in the leg, known as the thigh bone, not part of the ear.

- Option 4: Incus - Known as the anvil, it is another ossicle in the middle ear.