When the embryo (baby) died within the sac its forming inside. Due to this, the body reacting against it causing pain as such. On ultrasound you see an empty sac (sac with black center).
I think the answer is a because if it wasn't many bad ideas for medicine will come and we could get hurt from them.
To become an emergency medicine doctor, an individual must complete an undergraduate degree, and be accepted to and complete a medical school program. This is followed by a residency, and the completion of a fellowship if further specialization is sought.
