I would say the passage is mostly about smell receptors
Answer:
The mother
Explanation:
A subject is someone who is performing the action. A subject usually contains a noun or pronoun.
The mother is the subject in this sentence because she missed four days of work.
Aunt Alexandra is Atticus's sister and Scout's and Jem's aunt. Aunt Alexandra is well-mannered, but can sometimes be very strict and bossy. She tries her best to make Scout into a proper young lady.
It;s most likely Marjorie, because she can't live without it. Hope this helps :P