It’s the last one.
All of these are parts of the cell theory.
The correct answer is "<span>It will perform less than optimally unless the pH was increased."
This is because the curve on the graph shows pH versus reaction rate. If we follow the x-axis (the bottom one) to a pH of 7, it is at an extremely low reaction rate compared to other points of the graph. If we continue along, we see that the reaction rate increases as the pH increases. Therefore, the enzyme will perform less than optimally unless the pH is increased.
Hope this helps, and hope I'm the brainiest! :)</span>
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