Question

The forelimbs of birds (or aves) are modified into
(A)Peak
(B)Neck
(C)Wings
(D)Legs

Answer 1

Hint: The forelimbs of birds or aves are modified into a body part that helps birds or aves to fly i.e providing the facility of flight in them. This modified part is of different shapes according to the size of the organism.

Complete answer:
 Bird flight is known to be the primary mode of locomotion utilized by most bird species during which birds take off and fly. Flight helps birds with many activities like feeding, breeding, avoiding predators, and migrating. The bird's wings are the key to flight.

Additional Information: The wings of birds feature a central vein that helps birds to hit the wind, it is composed of three limb bones, which are humerus, ulna, and radius. The hand, or manus, which ancestrally was composed of 5 digits, is reduced to 3 digits which is an anchor for the primaries, one among two groups of flight feathers liable for the wing's airfoil shape. The other set of the flight feathers, which are present just behind the carpal joint on the ulna, are called the secondaries. The remaining feathers on the wing are referred to as coverts, of which there are three sets. The wing sometimes has vestigial claws. In most of the species, the vestigial claws are lost by the time the bird is attaining its adulthood(such because the highly visible ones used for active climbing by hoatzin chicks), but the claws are retained into adulthood by some of the birds. The names of those birds are screamers, finfoots, ostriches, secretary birds, several swifts, and various others, as an area trait, during a few specimens.
So, the correct answer is ‘Wings’.

Note: The wings of the birds are mainly grouped into four types, with some falling between two of these types. These different types of wings are elliptical wings, high-speed wings, high aspect ratio wings, and soaring wings with slots.