Researchers trained pigs to pick up large wooden "dollars" and deposit them in a piggy bank. instead of picking up the wooden discs, the pigs would drop them, push them with their snouts, and then pick them up to put them in the piggy bank. this behavior best illustrates
instinctive drift (t/f).

The correct Answer for the exercise: Researchers trained pigs to pick up large wooden "dollars" and deposit them in a piggy bank. Instead of picking up the wooden discs, the pigs would drop them, push them with their snouts, and then pick them up to put them in the piggy bank. This behavior best illustrates: instinctive drift (T/F). Is "T"

Explanation:

First of all, we need to understand the concept and then analyze the context to know why T is the correct answer. Now, Instinctive drift is the concept given to name the situation in which a conditioned animal behaves with its instinct instead of presenting it's conditioned behavior or presenting instinctive behavior that interferes with the conditioned behavior. In our case the piggies perform the conditioned behavior but after they act instinctively.

industry had made the u.s. the richest nation in the world at this time. the second industrial revolution caused growth in industry and transportation, which allowed increased trade between nations.

i would say b. research typically uses a variety of sources