A manager who mentors and develops subordinates, providing them with challenging opportunities and working one-on-one to help them meet their professional needs, is practicing a （）leadership style.

A manager who mentors and develops subordinates, providing them with challenging opportunities and working one-on-one to help them meet their professional needs, is practicing a （）leadership style.
A.transformational
B.laissez-faire
C.autocratic
D.transactional
正确答案：transformational