Correct Answer:
B. 3
This question focuses on the political representation within the Authority's structure. Option B, '3', is the correct answer because the Chief Minister is responsible for nominating three Members of Provincial Assembly (MPAs) to the Authority. This nomination ensures a link between the legislative body and the Authority, allowing for political oversight and alignment with government policies. Options A ('2'), C ('4'), and D ('5') are incorrect as they do not match the specified number of MPAs to be nominated by the Chief Minister. The precise number of three MPAs is a key component of the Authority's composition, balancing independent expertise with political representation.