The answer to 3 is A. The answer to 4 is C.
The correct option is NORTH AMERICAN BIRDS ILLUSTRATED.
North American Birds Illustrated is a book that serves as a guide to more than 600 different species of birds. For each bird, the author gave a full description, colorful illustration and details about habitats, preferred food, reproductive behavior and nesting habits. Such a book will be a great help in searching out the details about an unknown bird.
I think it means that she was growing older, or turning sixty years old, and had no time to waste doing what she's doing.