Answer:
Naturalistic observation
Explanation:
Observation is to watch what happens as a method of research.<em> Naturalistic observation is a research method that consists of observing the subjects in their natural environment without interventing.</em> In the example given this kind of observation happens because the observer is not interventing.
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Answer:
The answer is A. reinforced; imitate.
Explanation:
The branch of behavioral studies known as operant conditioning states that a conduct is more likely to be repeated if it is reinforced, positively or negatively. In this case, the reinforcement is positive (a reward: consolation).
Negative reinforcement is also possible: it occurs when an unpleasant stimulus is removed after a behaviour is presented. For example, a parent will stop nagging if his/her child cleans up the room.
A good example of a secondary source document useful in the study of history would be a textbook, because it provides basic information even though it wasn't an actual document from the historical time period.
