Question

A student’s hypothesis is that increased exercise causes increased heart rate. Heart rate is determined by taking the pulse, which is measured in beats per minute (BPM). Which of the following data would support this student’s hypothesis? *

A) When sitting, her pulse was 90 BPM; when walking, her pulse was 90 BPM.
B) When sitting, her pulse was 70 BPM; when standing, her pulse was 50 BPM.
C) When running, her pulse was 100 BPM; when sitting, her pulse was 60 BPM.
D) When running, her pulse was 65 BPM; when standing, her pulse was 70 BPM.

Answer 1

The data that would support the student's hypothesis that increased exercise causes increased heart rate is option C) When running, her pulse was 100 BPM; when sitting, her pulse was 60 BPM.

Step-by-step explanation:

The data that would support the student's hypothesis that increased exercise causes increased heart rate is option C) When running, her pulse was 100 BPM; when sitting, her pulse was 60 BPM.

Increased exercise leads to an increase in heart rate to meet the increased demand for oxygen and nutrients by the muscles. Since running is a form of intense exercise compared to sitting, it requires more energy and thus higher heart rate. The fact that the heart rate increased from 60 BPM when sitting to 100 BPM when running supports the student's hypothesis.