Which one of the following is NOT an ethical obligation of mentors?

Preventing the mentoring relationship from becoming manipulative,
      uncaring, or confrontational.
Staying alert for signs of inappropriate involvement, including
      sexual intimacy, dependency, or subconscious manipulation.
Being aware of important issues in students' lives without prying.
Recognizing the potential conflict between the mentor’s desire to
      maximize productivity in his/her research and his/her duty to
      support students' timely progress in their program.