The correct answer should possibly be ...............................
B. Tax assessor
Answer:
To the north and west of Ancient China were two of the world's largest deserts: the Gobi Desert and the Taklamakan Desert. These deserts also provided borders that kept the Chinese isolated from the rest of the world. This is why the Great Wall of China was built to protect the Chinese from these northern invaders.
Answer:
The method of A. Limits requires this.
Explanation:
The method of limits is generally used in research and it is used to <em>establish an individual's perception of a certain stimulus</em> through understanding the level at which it is perceived by him/her.
The stimulus is <em>presented and varies</em>, by being <em>decreased or increased</em>, until it is perceivable by the individual. The experimenter needs to vary the perceptible stimulus until it is no longer perceived and the imperceptible stimulus until it is perceived in order to measure the level at which perception is possible.
