The answer is <u>"The experiment is missing a control group."</u>
Control group, the standard to which examinations are made in an experiment. Numerous experiments are intended to incorporate a control gathering and at least one trial gatherings; truth be told, a few researchers hold the term analyze for contemplate outlines that incorporate a control gathering. In a perfect world, the control gathering and the exploratory gatherings are indistinguishable inside and out with the exception of that the test bunches are subjected to medicines or interventions accepted to affect the result of intrigue while the control amass isn't.
The Stamp Act. This act was passed by the British Parliment on the 22nd of March, 1965.
<em>Hope this helped! :)</em>
Explanation:
<em><u>Social stratification is a society's categorization of people into socioeconomic strata, based upon their occupation and income, wealth and social status, or derived power (social and political). ... Generally, the greater the social complexity of a society, the more social strata exist, by way of social differentiation.</u></em>
"Nature of the national government requires strict system of organization" is not an assumption behind the U.S. Constitution.
Basically, the Articles of Confederation was abandoned because of the weakness perceived in the document.
Some of the weakness of the Articles of Confederation includes:
- Each states have only one congress despite large population of citizen
- No power confer on Congress to regulate foreign trade
- No court or judicial system
- No power conferred on Congress to receive tax
Hence, the statement that "nature of the national government requires strict system of organization" is not an assumption behind the U.S. Constitution.
Therefore, the Option A is correct.
Read more about Articles of Confederation
<em>brainly.com/question/24912988</em>
