Step 1: Concept
The Institutional Animals Ethics Committee (IAEC) is responsible for supervising and approving animal experimentation within an institute.
Step 2: Meaning
Its composition is regulated to include diverse members such as scientists, veterinarians, and non-scientific members.
Step 3: Analysis
Guidelines for the composition of an IAEC typically specify a minimum of 8 members to ensure a balanced and thorough ethical review.
Step 4: Conclusion
Thus, the minimum required membership is 8.
Final Answer: (A)