Final answer:
The first step you should take when encountering a patient with symptoms of respiratory distress is to assist ventilations with a bag-valve mask and supplemental oxygen.
Step-by-step explanation:
The first step you should take in this situation is to B. Assist ventilations with a bag-valve mask and supplemental oxygen. Given the symptoms you described, such as perspiration, cyanosis, and rapid, shallow respirations, it is likely that the patient is experiencing respiratory distress. Assisting ventilations with a bag-valve mask and providing supplemental oxygen can help ensure that the patient is getting enough oxygen to meet their body's needs.