To put it on a simple term, psychology is the study to know why our mind works.
Behavior is not the only thing covered by psychology. It's a huge factor of it, but not all of it.
Psychology also teach us on why people developed a certain opinion, how people developed a certain preference, how interaction with other people affect our minds, etc.
Answer:
D. an elderly woman plants a flower garden on the vacant lot next to her house
Explanation:
External benefits refers to the advantage or potential gains one gets by investing or doing an activity or task which is not of any primary benefit to himself or herself. The society or other people can gain benefit from them apart from the person doing the activity.
In the context, a woman who does flower gardening on a vacant land which is next to her house can result an external benefit form the flowers. She can admire the beauty of the flowers and also the other people in the society. However it will not have an internal benefit to the woman.
The correct answer to this question is Congress
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