Flamingos in large flocks in the wild are social and extremely loyal. The perform group mating dances. Parents are very fond of their chicks, gathering them into crèches for protection while both males and females fly off to search for food.

Correct Option (c)

The passage details several social behaviours exhibited by flamingos, including group mating dances, the formation of crèches for chick protection, and cooperative foraging by both parents. These collective actions directly contribute to the safety and well-being of the offspring and the species as a whole, thereby increasing their chances of survival in a challenging environment. Therefore, it is a logical inference that social behaviour in certain bird species enhances their survival prospects.

Incorrect Options:

This option makes a universal claim about "all species of birds." The passage specifically describes the behaviour of flamingos and does not provide information to support such a broad generalization regarding the essentiality of mass nesting for the complete survival of offspring across all avian species.

This statement asserts that "only birds" possess the capacity for social behaviour and mass nesting. The provided passage focuses solely on flamingos and does not offer any comparative analysis with other animal groups, nor does it claim exclusivity of social behaviour to birds. Such a conclusion is an unwarranted extrapolation beyond the scope of the given text.

Similar to option (a), this option generalizes the specific behaviour of flamingos (setting up crèches) to "all species of birds." The passage describes this practice as characteristic of flamingos, not as a universal trait among all avian species. This constitutes an unsupported universalization.