Which is the online resource for instructors' supplementary materials?

• A. Student Workbook Exercises
• B. Push-dose pressor
• C. Instructor Resource Center (IRC)
• D. Clinical internships

Answer: (C)

The main idea is identifying the online hub that provides teaching aids specifically for instructors. The Instructor Resource Center is designed as a centralized online portal where instructors can access supplementary materials such as lesson plans, slides, answer keys, test banks, and other teaching aids. That focus on supporting instructors makes it the best fit for the question.

The other options don’t serve that purpose: Student Workbook Exercises are materials for learners, not a portal for instructor resources; a push-dose pressor is a clinical tool topic, not a resource hub; and clinical internships are hands-on training experiences rather than an online repository of instructor materials.