I think it'd be B.. I might be wrong tho..
Another name for unicellular organisms that dominated Earth up to the Precambrian time is prokaryotes. The correct answer is D.
ANSWER:
C. Solute.
As stated in the definition of the noun solute, it is "the minor component in a solution." This means that it is the less abundant part of the solution.
Therefore, Option C ( solute ) is correct.
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