Question

on the mandible, what is the vertical flat surface that projects upward on either side?

alveolar process
temporal process
mental protuberance
ramus

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Explanation:

The ramus of the mandible is the vertical flat - surface that projects upward on either side of the mandible. The alveolar process holds the teeth, the temporal process is not a correct term here, and the mental protuberance is the chin area.

Answer:

D. Ramus