Recently, the rate of C-section deliveries has increased to a level exceeding by ______ times the rate that is thought to be medically necessary.

When should a functional test of various components of emergency voice/alarm systems be performed?

A. Monthly B. Quarterly C. Annually D. Biannually

The letter ________ is the most commonly used combining vowel for forming medical words.

Fill in the blank(s) with the appropriate word(s).