The type of study that this is is observational study.
He is observing his team, each one of the members, in order to see how long they can hold their breath - which is why this is an observational study. Nothing is random here, there is no hypothesis, and there is no double blind, which means that the other options are incorrect.
Waterloo city is the city
I believe the answer is: Henry
<span>cognitive dissonance happens when an individual two contradictory behaviors at the same time.
</span>when a person have to undergone something that he doesn't like in order to get something that he desire as a reward (such as being humiliated to be accepted into a group), that person would most likely to maintain onto the ward because he does not want to revert back to the negative experience again.
When used a wepion hope it helps you
