The first versions of the Liberty Bell had cracks in it, but those cracks were repaired. It is however not known exactly how it got the crack that we know today: the version most cited today propose that it cracked during the birthday celebration of George Washington.
I believe what you're looking for is economics, but I could be wrong.
Answer:
This is an example of an experimental design.
Explanation:
Experimental design in research involves controlling the variables in order to prove the hypothesis. In an experimental design there must be an experimental group, that in this case is the group that received an herbal supplement, and a control group, that was only administered placebo. By having a control group, both groups can be measured and compared at the end of the experimental phase, to measure the influence of the independent variable.
Answer:
The answer is D. Both A. and C.
Explanation:
Community psychology emerged in the mid-20th-century, largely influenced by social movements, such as feminism and the civil rights movement. Its basic principle is that mental health problems are not only individual, but are also influenced by the social environment, oppression, poverty and other social conditions. It is not enough to treat the individual, if the social environment around him doesn't change which is why an intervention that adresses social conditions is fundamental to decrease the risk of mental disease. Therefore, one of its goals was to change the mental health system, incorporate the perspective of community psychology in treatment but also to take a preventive perspective on mental health, instead of a reactive one.
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