Answer:
started the conquest with small-scale raids into Western Xia in 1205 and 1207. By 1279, the Mongol leader Kublai Khan had established the Yuan dynasty in China and crushed the last Song resistance, which marked the onset of all of China under the Mongol Yuan rule.
Explanation:
<span>Choice (c) is correct. He found that sixty-five percent, or nearly two-thirds of the participants, were willing to give the research confederate the full 450-volt shock during the experiment. This showed how easily people are swayed by authority figures when it comes to following instructions without questioning.</span>
The correct answer is: variable!
The other thee options don't describe a factor, but a way of describing the factor, that is it is a statistical information that lets us understand something about the distribution of the values in this factor ( for this variable).
An example of a variable is income: and the different values are the specific sums earned.