An unknown crystal exhibits positive birefringence. It is rhomboid in appearance. What is its most likely identification?

While the EMT is inserting an oropharyngeal airway, the patient gags. The EMT should:

A) Remove the airway and maintain the head-tilt, chin-lift maneuver B) Lubricate the oropharyngeal airway and reattempt insertion C) Reattempt insertion using a smaller oropharyngeal airway D) Use a tongue depressor to better place the oral airway

Which of the following is an example of an implied contract? 

A. Employment contract B. Housekeeping/maintenance contract C. Lease agreement D. Making a medical appointment E. Partnership agreement