You are presented with the question "What is the distinguishing feature of monotremes?" and the following answer choices: - They lay eggs - the eyes - Veins and arteries. - eardrum - four limbs - layers of fat - They have thick fur - fur and fat Now knowing that platypus females lay their eggs in a burrow and examples of monotremes are the Platypus and Echidna, choose the best answer.
Answer:
They lay eggs