Multi-choice problem: Continue writing the next sentence in this paragraph:

How to remove health hazards from your backyard
Make sure your grill is not a fire hazard.
Everyone loves to grill in the backyard. However, grills are hazards because they are controlled fires.

Choices: a). There are several things you can do to prevent a fire : Always drain the burners before using them. These will make the flame crackling and hot, which can result in burns or fires.; b). Make sure you keep the grill and open flames at least 10 feet (8 meters) below the ground in any area that has a fire hazard. Also do not let children or pets get near the grill.; c). This means you should place your grill in a location that is a safe distance from combustible or flammable items. Place it 10 feet from anything that can catch fire.; d). Check your grill frequently to make sure it's in good condition and is not attracting pets. Older grill engines sometimes get hot coals in the core, too.;
c).