The Answer is: B) Tar
Step-by-step explanation:
A) Carbon monoxide fill's the lungs, which makes the smoker have a harder time breathing. Carbon monoxide isn't a sticky substance.
B) Tar is a sticky substance which cover's the lung's. Tar is formed from burning tobacco. Within time the sticky Tar substance build's up, and covers the lungs.
C) Nicotine is an addictive substance. Nicotine effect the body in many way's, within the first taste of nicotine is someone's system can start an addiction. Which can last months, years, and even life times.