Q. In which one of the following sets of animals do all the four give birth to young ones ?
A) Lion, bat, whale, ostrich
B) Platypus, penguin, bat, hippopotamus
C) Shrew, bat, cat, kiwi
D) Kangaroo, hedgehog, dolphin, loris
Explanation
[Solution from source] Kangaroo, hedgehog, dolphin and loris are all viviparous mammals. Each other set has an egg-layer: ostrich, platypus and penguin, or kiwi. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.