The cousins and neighbors file in to say, “keef ha-lik? ”—how are you? —the door opening into a thousand rooms. which best explains how nye’s word choice establish her voice in the excerpt?

The answer that best explains how Nye's word choice helps establish her voice in the excerpt is the following one:
Nye uses figurative language to support her opinion that staying connected to one's heritage makes life richer.
As you can see, she is using her mother tongue when talking to her neighbors so as to show them that she is still very close to her heritage and family background.

Bigchungus: bangs on doorpapachungus: that held em al rightthats how chungus works