Which of the following was a result of the wildfire?

A fast-moving wildfire erupted Friday on the main interstate between Southern California and Las Vegas, forcing evacuations of 1,500 homes and the closure of the freeway. By late Friday, firefighters were gaining the upper hand on the fire, allowing officials to lift evacuation orders for half of the homes and reopen the freeway to holiday weekend traffic.
    The fire began Friday afternoon and quickly grew to 1,100 acres. The fire was fueled by winds up to 15 mph and 90 degrees temperatures, but by evening cooler weather and calmer winds helped firefighters control the blaze, U.S. Forest Service spokesman said.
    The fire destroyed two mobile homes and damaged two other structures. A firefighter suffered heat exhaustion and another suffered a medical-related injury. By evening, authorities determined it was safe for those who live on the north and west side of the fire to come back.
    Air quality officials predicted that smoke from the fire would cause problems for people with health sensitivities in the San Bernardino and San Gabriel mountain areas. The South Coast Air Quality Management District urged them to avoid unnecessary outdoor activities.
                                                             CNN Student News