The answer is a Natural Experiment.
A natural experiment takes place in natural settings and are used when independent variables can't be manipulated directly for ethical/practical reasons, so in this case the toddlers playing. Any effect observed happens naturally. They aren't seen as true experiments as the independent variable (toddlers playing) hasn't been changed deliberately to see effect on dependent variable (aggressiveness).
There troops wanted to see the oceans thats why they were excited
Answer:
b). must be determined by a review board established by the sponsoring institution
Explanation:
A given research study may be considered by some people as possible of causing harm to the participants who are doing the research study. But this may not be always true.
Whether the research study may cause some potential harm to the participant or not, must be recognized and determined by the review board who is doing the review of the project study and is established by the sponsoring institution.
Thus the answer is
b). must be determined by a review board established by the sponsoring institution
