Correct option is B
The correct answer is (b) Cuckoo.
· Cuckoos are known for their unusual reproductive behavior known as brood parasitism. Many species of cuckoo do not build their own nests; instead, they lay their eggs in the nests of other bird species. The cuckoo egg hatches earlier than the host's, and the young cuckoo often ejects the host’s eggs or young chicks from the nest. This behavior allows the cuckoo chick to receive all the food and care from the unsuspecting parent birds, which believe it to be their own.
· This strategy is an adaptation that allows cuckoos to allocate more energy towards producing eggs, as they do not have to invest in raising their young or building and guarding a nest.