Choose the letter of the implied main idea of the passage below. Everyone enjoys sitting in front of a crackling wood fire on a cold day. But how many realize that fireside
pleasures can lead to unpleasant surprises? Birds can nest in a chimney, clogging the flue and causing smoke
back-up or chimney fires. Also, small cracks in a chimney shaft can allow flames to dart sideways, coming in
contact with house walls. Serious lung distress can be caused by some items that people burn in fireplaces,
such as lumber treated with toxic chemicals or colored paper. And, of course, bits of ash and sparks can fly
out and ignite a carpet or curtain.
Fireplaces should be outlawed.
Fireplaces should be inspected regularly.
Birds that nest in a chimney may cause smoke back up.
Fireplaces can lead to problems.