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Question 1:
This common side effect is caused by the hormone, progesterone, which relaxes the valve that separates your esophagus from your stomach, allowing gastric acids to seep back up, which causes this uncomfortable sensation.
A. Heartburn
B. Back pain
C. Constipation
D. Nausea

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Trivial Practice Quiz science-technology - Test 22 | Englishfreetest.com