3. What are three things that should be considered when selecting participants for an experiment?
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HERE IS YOUR ANSWER

Explanation:

1. YOU HAVE TO SEE WETHER HE IS A STABLE PERSON WHO LISTENS YOU .

2. YOU HAVE TO SEE WETHER HE IS ELIGIBLE FOR THAT EXPERIMENT.

3.HE MUST HAVE ALL THE NEEDED FOR THE WXPIREMENT .

HOPE IT HELPS YOU

REGARDS ,

RACHANA

for me i have felt invisible when i was clearly struggling,or,i made a great achievement ,and,nobody took to notice me either because they just didn't see it,or,people just turned their back on me.i can see a person being invisible by choice,or,without choice like i did.the people who are invisible by choice don't try to talk to people,don't try to make friends,and,keep to themselves.i haven't been one of those people so i couldn't give you a reason.

hope this and can i get bainliest my dude : d

the answer is false, i know this answer is late but its for anyone else that needs it.