Identify the group, which includes animals all of which give birth to young ones directly?

Dolphin, kangaroo, bat, cat

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Platypus, penguin, bat, hippopotamus

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Shrew, bat, kiwi, cat

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Lion, whale, ostrich, bat

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Solution

The correct option is B Dolphin, kangaroo, bat, cat
Animals that give birth to babies are called mammals. So, the animals, reproducing the babies of their own kind, by directly giving birth, are called mammals. For example, human beings are mammals. Cats, dogs, cows, horses, elephants, goats, pigs, lions, rats, squirrel etc. are also mammals. Whales, seals, dolphins, and otters are mammals (warm blooded creatures that give birth to live young. Bats and kangaroo are mammals and thus give birth to live babies.

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