The human blood having a pH between 7.35 and 7.45 simply means the blood is slightly basic.
The correct answer to the question is Option C. slightly basic.
The pH of a solution is simply a measure of the acidicity or alkalinity of the solution.
The pH scale ranging from 0 to 14 gives a discription of the acidicity or alkalinity of a solution as follow:
0 to 6 => acidic
7 => Neutral
8 to 14 => Basic
From the question given above,
The pH of the blood reads between 7.35 and 7.45.
This simply implies that the human blood is slightly basic as the pH reading of the blood is a little above the neutral mark (i.e 7) of the pH scale.
Therefore, Option C. slightly basic. gives the correct answer to the question.
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