A superhero in a comic book boasts that his senses are so well developed that he can see a candle flame at night at a distance of 30 miles, hear the tick of a watch at 20 feet,

detect by tasting the presence of one teaspoon of sugar in 200 gallons of water, and smell whether one drop of perfume has been sprayed in an area equivalent to a three-room apartment. The only claim that sounds extraordinary is that he can

a. see the flame from a candle at a distance of thirty miles.
b. hear the tick of a watch at a distance of twenty feet.
c. taste the presence of a teaspoon of sugar in 200 gallons of water.
d. smell the perfume in an area the size of a three-room apartment.

Answer: c. taste the presence of a teaspoon of sugar in 200 gallons of water.