The two excerpts that use language helping to build an informal tone are:
A. "After rinsing each dish in the creek, she dried them with her shirtsleeve and put them back in place."
E. "Ona had been swaddled and maneuvered into the bow of a rowboat and, as legend tells, slept through the whole affair."
These excerpts present a conversational style, utilizing everyday language and relatable imagery that contribute to a more informal tone.