Answer:
d. Iceland
Step-by-step explanation:
The Mid Atlantic Ridge is a limit between the Euroasian and the North American tectonic plates, in the North Atlantic Ocean, and the African and South American plates, in the South Atlantic Ocean. Think on this plates as they smashed one to the other, and created a big mountain after that. Most of this big mountain is under water, but there is only one country, in the North Atlantic, whic has part of this big mountain, and is splitting it in two. That is Iceland. Attached, you will find two images, from wikimedia commons. One, for the Mid Atlantic Ridge, the other one, for a photo of it on iceland.
Credits
1. Copyright: public domain. US Geological Survey image.
2. By Pmarshal - Own work, Public Domain,