Answer:
A. hospital labor rooms
Explanation:
The United States is an advanced industrialized nation with top-tier medical facilities and care. For this reason, the vast majority of births (over 98%) take place in hospital labor rooms.
According to the Center for Disease Control and Prevention, in 2012, only 1.36% of births in the U.S took place outside a hospital, mostly in very rural areas in mountainous western states: Alaska, Idaho, Montana, and Oregon.
