Question

For an organism to belong to class mammalia,it should have

A . spinal cord
B . ear drum
C . limbs
D . mammary glands​

Answer 1

explanation:d. mammary glands

Answer 2

All the Mammalia have mammary glands.

Therefore, the answer is mammary glands.

Step-by-step explanation:

I am sure that mammary glands are present in Mammalia.

I hope this helps ☺️ ❤️