Question

1. one way that ornithologists study birds is by banding them. they gently capture the birds. after observation, they attach a small, light, aluminum band around one of each bird’s legs. each band is inscribed with a number. the birds are ____________. most of the birds are not recaptured. but for those that are, their travels can be tracked and recorded. this is an excellent way to study migration.

a tagged
b awakened
c challenged
d dismissed

Explanation:

The text describes attaching bands to birds' legs for tracking. "Tagged" means marked or labeled in this context, which fits the action of attaching numbered bands to the birds.

Answer:

A. tagged