Final answer:
To best support a capital request for new infusion pumps, it is essential to provide cost comparisons, usage rates, and an assessment of the current equipment's condition, which offers a thorough rationale for the purchase.
Step-by-step explanation:
The best way to support a capital request for three new infusion pumps at approximately $1500 each is option b: Cost comparisons; how much and how often infusion pumps are used; condition of existing pumps.
This approach provides a comprehensive justification for the purchase by highlighting the financial efficiencies, usage patterns, and the current status of existing equipment, which together make a compelling case for the investment. Option a only addresses an indirect aspect of the need, while options c and d offer financial details but lack the context and comparative analysis that would support effective decision-making.