Answer:
Random assignment.
Explanation:
Random assignment (also known as random allocation, or randomization), in psychology experiments, is randomly selecting participants or units by the use of chance procedures so that each participant or unit has the same chance (equal likelihood) of being assigned to any particular control or treatment group.
The answer to this would be D: eats mostly or only foods that are plant-based. this would be because all the others are false, vegetarians can get all the essentials from plants and nuts and stuff, they just don't eat meats.
-hope this helps :3
B. Talk to a trusted adult!
They have more experience and would know what to do before things got out of hand!
(Edit): Forgive me, I did not see the part where it said to choose three
