What does a preposition show when it links ideas in the sentence in some kind of relationship ?

some attention getter quotes to support your thesis regarding brain work could be the following: :

a. storage capacity of your brain is virtually unlimited.

b. your brain produces sufficient electricity to light-up a small bulb.

c. different brain circuits are involved with reading aloud or silently.

d. your brain by itself does not feel pain.

e. reading allows your brain to download info directly.

f. brains of two musicians performing together can synchronize.

the bazaar because it represents the inaccessible land of freedom to the narrator. mangan’s sister because she represents domesticity and routine to the narrator. the marketplace because it represents the suburban lifestyle to the narrator. the church because it represents spiritual healing and renewal to the narrator.