Which of These Interventions Would Take Priority and Should Be

Which of these interventions would take priority and should be included in a plan of care for a patient who presents with pneumonia?

A) Observe the patient for decreased activity tolerance.
B) Assume that the patient is in pain and treat accordingly.
C) Maintain the ambient temperature at 18.3°C (65°F) .
D) Provide the patient ice chips as requested.