Answer : A, B , C
Explanation: the second option
C, when you’ve sat still for a few minutes. Your resting heart rate is your heart rate when you’re not moving, so this would be the optimal time.
The inner wall of the esophagus is lined with stratified squamous epithelium. It shows up as large purple on your slide. Notice that the cells at the base of this epithelial layer are cuboidal. This is the region where mitosis occurs.
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