How did Helen communicate with her family before she learned
the finger alphabet?

She developed hand gestures, to me it was almost a simpler version of sign language.

Explanation:

By age 7, Keller had developed nearly 60 hand gestures to communicate with her parents and ask for things. However, she was often frustrated by her inability to express herself. With the help of her teacher, Anne Sullivan, Keller learned the manual alphabet and could communicate by finger spelling.

the answer is b, the key is a bleak reminder of the changes in lorenzo's life

just took the test and i hope this helps:D