I believe the answer is: Interaction between people
Simmel focused his life on researchers to study different type of social interaction that people do with one another. He consider things such as psychology, economics, culture, and sociology as crucial factors that motivate people to interact with one another.
You and your friend are both riding personal watercraft (pwc), and he is out in front of you. if he stops abruptly, you must: use the throttle to turn so as avoid a collision.
<h3>What is Watercraft?</h3>
Watercraft are vehicles that is ride on water.
Example of watercraft are:
- Ships
- Boats
- Hovercraft
- Submarines
Hence, if you and your friend are riding personal watercraft, and he is out in front of you. in a situation were he stops abruptly, you must use the throttle or acceleration to turn so as avoid a collision as throttle help to control speed while on motion.
Learn more about Watercraft here:brainly.com/question/24328357
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The correct answer to this open question is the following.
According to your question, there are only two parts to be answered, a) and b).
Being that the case, we can comment on the following.
A) This is an observational study and not an experiment because the research was only limited to observation, participants never receive any kind of treatment or another interaction to experiment with them.
B) Who were the subjects of the study?
The subjects of this study were women aged 65 and older who were tracked for several years. The observation revealed that those women who had a vitamin B12 deficiency were twice as likely to suffer severe depression as those who did not.
So, according to the American Journal of Psychology, these were the women observed during the study. There were no more experiments, interactions, or activities applied to them in order to consider it an experiment.
Let's remember that in order to consider an experiment as such, there has to be another component of the study, and the experimental part of it that has to be tested and proved passing the scientific method to conclude in something valid.
