Which of these is a good example of delegation?

Which of these is a good example of delegation?
 
  A. When Tom asks if obtaining a certification would be good for the agency, Alice
  asks him to find information to answer the question.
  B. When Amita expresses interest in a grant-writing workshop, Russell adds
  grant-writing to her other responsibilities.
  C. After Tom says he'd like a chance to make more decisions, Sara puts him in
  charge of reorganizing the supply closet.
  D. When Tamsin says she's overwhelmed, her supervisor tells two other
  clinicians on her team to help Tamsin out.