Answer:
Its c um
Explanation:
Im not sure if you're being serious or not but if you are, that is sp erm from your brothers genitals. I would not touch it and definitley would not lick it. It is completely normal, but if I were you I wouldnt mention it and wouldnt snoop in my brothers room.
PSA is Public Service Announcements. Its purpose is to create awareness about a topic of public interest, such as drunk driving and don't txt 'n drive.
look at the PSA pciture n see what its saying.
Data is collected only once from a participant is not a characteristic of a longitudinal study. Thus, the correct option is A.
<h3>What is a Longitudinal study?</h3>
A Longitudinal study may be defined as a scientific approach to a specific research that involves recounted compliances of the duplicate variables over short or long periods of time.
A longitudinal study involves the collection of data from the same participants at different points in time, collection of data from a large sample size at the same time, and collection of data that can span over several years.
Therefore, the correct option for this question is A.
To learn more about Longitudinal study, refer to the link:
brainly.com/question/25681723
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