A study is being done on a group of people to decide the harm of fast food to the body. The
patients have their own choice on whether or
not they choose to eat the food and the doctors
just observe the results. What type of sample or
survey is this?
A. observational study
B. self-selected
C. controlled experiment

self selected

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i hope it is helpful for you

i used to know but i learned it a long time ago sorry

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this is a very good question

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i got a hair cut today from my mom not to flex just to flex kim jon un is one rad fellow i'd say you'd need to take the hairline in kinda like a box shape like someone rammed a lego brick into your head. from there you really need to take the top up keeping with that boxy aesthetic, finally coat the whole thing with gel if your country economics are failing or whatever you can just coat it with the starving children's food rations. about 5 orphans per strand is a good ratio. good luck with the fresh cut my dude