The correct answer is A. Its many religions and ethnicities.
The main reason which contributed to Nigeria unrest is having so many ethnicities and religions.
There were a lot of mass kidnapping, gun assaults and bombing.
Most of the places which were targeted included mosques and churches when they are worshiping, markets, restaurant, shopping centers, security and government institutions.
The major contributor to unrest in Ni.geria is its many ethnicities and religions.
Ni.geria is a country that is known to be the most largest nation on Earth.
Conclusively, It is home to the best creative state in Africa and it is one that is faced with issues as a result of many ethnicities and religions
Learn more about this country from
https://brainly.com/question/507147