You are the paramedic on a search and rescue team that is preparing to carry a 21-year-old male patient who fell 18 feet from his tree stand, injuring his back and sustaining obvious bilateral lower leg fractures. Which of the following environmental conditions could most easily affect the patient's condition during the half-mile litter carry to the closest helicopter landing zone?
A) c. Uneven rocky terrain on the trail to the landing zone
B) a. Approximately 1 foot of snow covering the ground
C) b. Snow falling at 2 inches per hour
D) d. Winds of 30 mph with a wind chill of -10° F
Answer: D) d. Winds of 30 mph with a wind chill of -10° F