Context: Monotremes are a group of animals with similar traits. The following traits can be used to identify monotremes:
They make eggs with shells.
They have fur or hair. Observe the animals and read the descriptions.
Select the one animal that has all of the monotreme traits listed above.
A. Echidnas are covered in fur and spines. Their spines help protect them from predators. When an echidna is scared, it curls up into a ball! Echidnas lay eggs and feed their offspring milk.
B. Adult tiger salamanders have moist, smooth skin with stripes. They live in burrows underground, but they begin their lives in water. Young tiger salamanders hatch from eggs with no shells underwater.
Pick the correct answer from the listed options and provide the letter of the selected option.

A