Which of these does scout and jem discover when calpurnia takes them to her church? calpurnia is a liar.
calpurnia keeps dark secrets.
calpurnia acts differently among the finches.
calpurnia has trouble fitting in with the black people in maycomb.

Calpurnia acts differently among the Finches.

Calpurnia takes the children to her church in Chapter 12. This is significant, as Calpurnia attends an all black church. Scout is initially amazed at the fuss that Calpurnia causes simply because of church. When they arrive, the children learn that the church is very similar to their own. However, the reason why the event is particularly special is that Scout realizes Calpurnia has a "double life." In other words, she is a very different person when she is among the Finches than when she is not at work. This leads to a recognition of Calpurnia as a complex individual.

"the sandy walls seemed to collapse in on themselves"

and

"the bloodshot waters seemed to have no bottom"

consonance, it has the repetition of the consonants in stressed syllables with different vowel sounds.