Which claim about early american government is not based on the passage?
oa. the colonists believed the british were violating their unalienable rights.
b. the u. s. government under the constitution enforced laws more
effectively.
oc.
the constitution clearly defined the economic freedoms and
opportunities of u. s. citizens.
d.
the state governments retained the power to create their own laws and
constitutions.

this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.        

can you explain it better

answer; role- taking;

answer; ///attempts to change more than once behavior at the same time;