Answer:
Should
Explanation:
Should, it makes more sense to use the word "should not" instead of "must not".
Answer:
John's is the possessive noun.
B.
bows and gives in to someone
Answer:
Experimental or treatment group
Explanation:
In science, researchers use different variables to test the cause or effect of a specific treatment or phenomena. These variables could be dependent or independent.
In these experiments, the control group refers to a group that does not receive any type of treatment or, in other words, does not receive any variable. On the other hand, the experimental group receives the treatment or variables and is the one that would show the results.
These two groups - control and experimental - are subsequently compared.
