Final answer:
The 4 Apex institutions mentioned in the constitution are Ismaili Councils, Aga Khan Trust for Culture, Aga Khan Health Services, and Aga Khan Fund for Economic Development. These institutions are part of the Aga Khan Development Network, working towards improving various sectors of society.
Step-by-step explanation:
The 4 Apex institutions mentioned in the constitution are:
B) Ismaili Councils,
Aga Khan Trust for Culture,
Aga Khan Health Services,
Aga Khan Fund for Economic Development
These institutions are part of the Aga Khan Development Network, which is a global network of non-denominational development agencies. They work together to improve the quality of life of people in various sectors such as education, healthcare, culture, and economic development.