The answer in the space provided is osmotic pressure because
this is a type of pressure that is used in solvents that are pure in which is
use to prevent it from having to pass to solutions in which is also described
in the given statement above, it is exerted to prevent the water from diffusing
to another solution.
Answer: Interventional Study
Explanation: When a treatment group is compared to standard (control) group it is called Interventional Study
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The answer to ur question is a