NYM (Nigerian Youth Movement) evolved from LYM (Lagos Youth Movement). The LYM was formed in 1931 in Lagos by a group of educated young Nigerians who were concerned about the political and social situation in Nigeria under British colonial rule. The LYM aimed to mobilize and empower young Nigerians to participate in the political process and to fight for the rights and interests of Nigerians.
In 1934, the LYM was renamed the Nigerian Youth Movement (NYM) and expanded its membership and activities beyond Lagos to other parts of Nigeria. The NYM became a leading nationalist organization in Nigeria, advocating for greater political representation and self-determination for Nigerians.
Therefore, the answer is LYM (Lagos Youth Movement).