"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." The federal government is another name for the national government (Congress, the President, and the Supreme Court) of the United States.
Answer:
Babysitting, swimming, camping, skateboarding, and painting
It is called experimenter bias
experimenter bias refers to the cognitive bias that held by researchers that might cause them to subconsciously influence the outcome of the experiment.
The most likelt cause of this bias is a situation where experimenters held a certain belief or expectation for the outcome of the experiment.
D. a trade off is the concept that with every decision, you get something and give something else up