1 goes with B. 2 goes with A. 3 goes with C.
part b:
1. it is an author's perspective because it does not include and first hang accounts of anyone who discovered the bird
2. the purpose of the account is to inform us that a new species was discovered. "by all accounts, the discovery of the new species of bird was a historic one."
3. someone might want to read more about how they came to find the bird or to find out more information on the bird such as eating habits, daily activities, or nightly rituals.