Answer:
Option C
Explanation:
According to World Health Organization(WHO), a threatened abortion is pregnancy related bloody vaginal discharge during the first half of pregnancy without cervical dilation.
It is most common with women who bear children at much older age. The chances of having a threatened abortion increases as a woman's age increases.
The common symptoms are the ones that the woman has; bright red bleeding,cramping etc.
The patients should be monitored so as to avoid progression into an inevitable abortion. Also, she should be giving analgesic drugs to relieve her pains. The patient should repeat pelvic ultrasound weekly and also, abstain from sex.
<span>b. They release oxygen that organisms use to breathe.</span>
