Elizabeth just moved to Youngstown, New York and bought a ho…

Elizabeth just moved to Youngstown, New York and bought a house a block away from the town’s fire station. Everyday at noon, the fire station sounds its siren to indicate the time of day. Elizabeth works third shift at the hospital and sleeps during the day. After the move to Youngstown, Elizabeth became frustrated with the siren sounding everyday because it always woke her up. After a few weeks, Elizabeth noticed that she was no longer waking up to the siren at noon, and she wondered if the fire station stopped making that annoying noise. She realized one day when she was awake at noon, that the fire station was still sounding the alarm. Elizabeth was happy to find that she had ___________ to the sound, and was no longer reacting to this stimulus.