Nigeria was suspended from the Commonwealth because of her

Nigeria was suspended from the Commonwealth because of her violation of fundamental human rights. The Commonwealth is a political association of 54 member countries, most of which are former British colonies, that aims to promote democracy, human rights, and economic development. Nigeria was suspended from the Commonwealth in 1995 following the execution of the Ogoni Nine, a group of environmental activists who were fighting for the rights of the Ogoni people in the Niger Delta region. The Nigerian government's crackdown on this peaceful protest, including the summary trial and execution of the Ogoni Nine, drew widespread condemnation from the international community and led to Nigeria's suspension from the Commonwealth. The suspension was lifted in 1999 following the transition to civilian rule in Nigeria, and the country has since been fully reintegrated into the Commonwealth. Therefore, the correct option is "violation of fundamental human rights".