Answer:
The answer is option b. Fundus of the uterus is high and pushing the diaphragm upwards.
Explanation:
As pregnancy progresses, there is an increase in the size of the uterus ( fundal height) to accommodatee the growing baby. The result is pressure of the fundus of the uterus on the diaphragm with resultant reduction in the capacity of the lungs. The hormone progesterone is secreted to stimulate the respiratory centres to enable lower breath intake which leads to shortness of breath.
