Its a hard decision but i would choose c :/
Answer:
When S mutans, lactobacilli, and other plaque species were compared in vitro for their ability to ferment sucrose at different pH values, S mutans was found to be more active than the other bacteria at pH 5.0, and thus, it is probably most active in vivo at the very pH at which the teeth begin to demineralize.
Answer:
To find and test pulse would be wrist and neck
Explanation:
