Columbus’s theory that he could reach Asia by sailing west was considered daring because a.
Bartolomeu Dias had already proven that an eastern land route was more profitable.
b.
caravels were not capable of maneuvering through the Strait of Magellan.
c.
some people believed that such a long voyage would be impossible.
d.
such a journey would require Columbus to circumnavigate Earth.

The technique of getting a commitment from a potential customer and then changing the terms of the agreement is best described as low-balling. cognitive dissonance. reciprocal concession. the foot-in-the-door technique. a half-dozen high school students are going to a concert. chantal wants to wear a new colorful outfit that she just received as a gift, but she assumes that her five friends will all be wearing nothing but black leather. chantal decides to do likewise, and leaves her colorful outfit in the closet. chantal’s behavior is an example of conformity. resistance. reciprocation wariness. idiosyncrasy credits.