Answer
c. Buffer
Work Step by Step
A buffer is a solution consisting of a mixture of a weak acid and its conjugate base to control the PH level of certain solutions. In nature, it occurs on our blood to keep our blood PH level normal.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.