Answer:
d. participant observation
Explanation:
Based on the scenario being described it can be said that in this situation Mary is using participant observation as a method of gathering data. This is a research method where the researcher (in this case Mary) observes the participants of the study but also engages with them in order to better gather more detailed information. Such as Mary has done by also volunteering in order to gather data on the other women.
The source at the bottom would be information given by the people involved in a case.
The information given by the people that directly impacted by a certain case would most likely be designed to provide the most benefit for those people.
This is why united states operates on assumption that an accused would be innocent until he/she is proven guilty.
Information given by the people involved could only be held<em><u> as something to be confirmed </u></em>by other evidence or witnesses.
Amphetamines are found in both prescription form and in illicitly manufactured forms, this is commonly known as speed or uppers. One example of an illicitly manufactured amphetamine is methamphetamine and the designer drugs.Typical street amphetamine is manufactured in illicit laboratories and is found in varied colors, but is normally a white crystalline powder that can be normally sniffed.