What are three priority nursing considerations when preparing to care for a client who is 84 years old, lives alone, and presents to the ER with confusion?

a) Assess for risk of falls, implement fall prevention strategies, monitor for dehydration
b) Evaluate for possible medication interactions, assess for signs of infection, initiate mental health consultation
c) Perform cognitive assessment, implement social services referral, monitor vital signs closely
d) Check for history of neurological conditions, assess for signs of stroke, monitor blood glucose levels