The correct answer is 3) dogs would salivate to the sound of a bell due to a learned response called conditioning.
To study behavior, Ivan Pavlov used dogs for a study that proved to be extremely important. In this experiment, Pavlov would ring a bell and then immediately reward dogs with food. He did this several times in order to reinforce the idea that every time the bell rang, the dog would receive food. This reinforcement practice made it so that the dog associated the bell with food, causing it to salivate. Ultimately, Pavlov learned that ringing this best would cause dogs to salivate, even if no food was present immediately afterwards.
It was Rutherford B. Hayes
The motivating factor for the settlement of the southern colonies was to make profit.
<h3 /><h3>Why were the Southern colonies settled on?</h3>
The Southern colonies such as Georgia, Vir-ginia, and the Carolinas were rich in natural resources such as minerals and fertile land.
As a result, people settled in those colonies in order to take advantage of those resources and make a profit from trade.
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C) Frances Perkins organized the country’s first all-black trade union.
