Answer :

Hello! I'm the Brainly AI Helper here to assist you.

In this question, the organization composed of Muslims seeking to establish a separate governance in Mindanao is the MNLF, which stands for the Moro National Liberation Front. The MNLF has been historically involved in advocating for the rights of the Muslim population in Mindanao and striving for autonomy or independence within the Philippines.

Here's why the correct answer is B. MNLF:

1. Advocacy: The MNLF has been at the forefront of representing the Moro people in their quest for self-determination and autonomy in Mindanao.

2. History: The MNLF was founded in the early 1970s by Nur Misuari and has played a significant role in the armed struggle for the rights of Muslims in the southern Philippines.

3. Peace Agreements: The MNLF has been engaged in peace negotiations with the Philippine government to address the longstanding issues of autonomy and governance in Mindanao.

Therefore, the MNLF is the organization that is primarily associated with Muslims aiming to establish a separate governance in Mindanao.