The Correct Answer Is B. Weight
I believe the answer is: <span>discovery of the influence of the unconscious mind.
Prior to this discovery, many experts in psychology were stuck in finding some explanations of some abnormal behaviors (such as split personality).
The discovery of unconscious mind would provide a theory on such occurrences and provide a lead that can be used by them to cure it</span>
I believe the answer is: A just-noticeable difference
In painting, A just-noticeable difference refers to the amount of things that needed to be change for a difference to be noticeable.
The threshold usually depended on the type of audience that being aimed toward, (for common audience, the threshold of differences would be relatively higher compared to expert audience)<span />
<span>The answer would be D) Europeans wanted new sources of raw materials and new markets to which they could sell goods, increasing European wealth.
Why is it D)? because </span>Europeans were also interested in the other reasons, but only after they began exploring ways to make money.
