Part A
The sentence that identifies an analogy used in Farewell to Manzanar is:
Jeannie describes the schools, churches, Boy Scout troops, and beauty parlors in Manzanar as though it was an ordinary American small town.
Part B
The effect of the analogy in Part A is:
It suggests the ways in which life in Manzanar took on a type of normalcy or familiarity.