B. South America
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The results of a psychological research can be used for malignant purposes, such as fooling individuals through their emotions, using propaganda to change beliefs, and manipulating others through the media.
But it can also be used for good – which is what the question is asking. It is clear that from the available options, only (D) improving communication and relationships are an example of how psychological research is used for good.
The most common way I've seen is to have a slide where you have the additional information. It can be phone numbers, email address, websites, books, anything you want to refer to.
People tend to photograph these slides so make sure the information is error free and that you add you own marketing info to the slide as well.
Answer:
for this, u will have to put what u already know into a few stanzas and turn it in. hope this helps.