Final answer:
To provide appropriate care for a 70-year-old female displaying signs and symptoms of an acute stroke, the best course of action would be to assist her ventilations with a bag-valve mask.
Step-by-step explanation:
Based on the provided information, the appropriate action to take for a 70-year-old female with signs and symptoms of an acute stroke would be to assist her ventilations with a bag-valve mask. While she is conscious and breathing adequately, her secretions in the mouth indicate potential airway obstruction. Assisting her ventilations with a bag-valve mask can help maintain a patent airway and ensure sufficient oxygenation until she can be transported to a healthcare facility for further evaluation and treatment.