By he NIH trying a new drug to help reduce pain associated with sickle-cell anemia, it's an example of an "experiment".
An experiment involves a hypothesis (an educated guess as to what's going to happen) and trying out the hypothesis and finding the solution.
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It is between A and D .But I thin it is A
They can use scientific journals, presentations during meetings, or just directly towards the public.
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As a principal, I would make sure the students affected by bullying knew they could come to a teacher. Having a trusted adult is very important so that way the student could explain their situation. I would enforce consequences for the bullies. Also educating staff and students on the signs of bullying. Many children won't speak up if they are being bullied, which would decrease the likelihood of the bullying going unnoticed. Not only this but preventing the bullies themselves by teaching the consequences of bullying at a young age.
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