For the first question regarding chronological text structure, the correct response is:
a. A story about a day in the life of a zookeeper
This option presents events in the order they occur, which is characteristic of a chronological structure.
For the second question about the passage provided, the correct text structure used is:
c. Compare and contrast
This is because the passage compares the behaviors of migrating birds to non-migrating birds, specifically highlighting the cardinal's adaptation to colder weather while others migrate.