Answer:
A
Explanation:
This is because she used her participants as an experiment in order to find her solution.
Matthew is employing the research method called participant
observation. This is a type of data collection method where the individual is
likely to collect information about cultures, people or process in a
qualitative research and that the individual is likely to be referred to as the
player in the action.
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The 10 amendment states, "<span>The powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people."
This is basically saying that anything that was not given to the federal government and not banned by the Constitution is a power of the states. thus increasing the power of the states</span>
The answer is B i hope i was helpful
