Final answer:
The correct answer is option D: Paralegals should consult with clients before billing.
Step-by-step explanation:
The statement suggests that paralegals should consult with their supervising attorney/s before discounting their time to make billing acceptable to clients.
This means that paralegals should not discount their time without asking for approval. Consulting with their supervising attorneys ensures that the discount is appropriate and agreed upon by all parties involved.