Correct Option: A

The glass lizards or glass snakes, genus Ophisaurus, are a group of reptiles that resemble snakes, but are actually lizards. Although most species have no legs, their head shape and the fact that they have movable eyelids and external ear openings identify them as lizards. A few species have very small stub-like legs near the rear vent. These are vestigial organs meaning they have evolved and they are no longer in use. These animals are also known as Glass Snakes or Jointed Snakes.