The answer is E. Hookah.
A cigar is a roll of tobacco that is smoked, typically after being cut into smaller pieces. A cigarette is a small, thin roll of tobacco that is smoked, typically after being lit at one end and inhaled through the other. Tobacco is a plant that is grown for its leaves, which are used to make cigars, cigarettes, and other tobacco products. A pipe is a device that is used to smoke tobacco, typically by filling it with tobacco and then lighting it. A hookah is a water pipe that is used to smoke tobacco, typically by filling it with tobacco and then lighting it and inhaling through a hose.
The difference between a hookah and the other options is that a hookah uses water to filter the smoke, while the other options do not. This means that the smoke from a hookah is less harsh than the smoke from a cigarette or cigar. However, hookah smoke still contains harmful chemicals, so it is important to smoke in moderation.