I believe the answer is: category i
Category i is the type of study that is conducted in order to found a possible cause and effect of a certain situation.
This type of study is commonly presents no more than a minimal risk and the subjects wouldn't feel any inconvenient because of their participation.
The major battles of the war took place in the Spanish colonies of the Philippine Islands and Cuba
Answer: Belief systems are a part of the environmental side of the coin. Humans accumulate thousands of beliefs throughout our lifetime, about all aspects of life. We gain them through things that other people say to us, things we hear on the news, things we read, or any other external influences that we are exposed to.
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Both,but trump won so it worse than i thought