B. <span>The thesis statement is the answer to the research question</span>
A healthy immune system shows normal amounts of white blood cells.
The statement that is true about a buffer is that it reduces the amount of H+ in an acidic solution (option B).
<h3>What is a buffer solution?</h3>
Buffer is a solution that is used to stabilize the pH (excess acidity or alkalinity) of a liquid.
Buffers operate by neutralizing any added acid (H+ ions) or base (OH- ions) to maintain the moderate pH, making them a weaker acid or base.
Therefore, it can be said that the statement that is true about a buffer is that it reduces the amount of H+ in an acidic solution.
Learn more about buffer at: brainly.com/question/1423164
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I will answer this if I find the answer.
Answer:
a. Regeneration is the answer
