You are caring for a 45-year-old male patient who was tendin…

You are caring for a 45-year-old male patient who was tending to his fruit orchard when he suddenly developed headache, dizziness, blurred vision, and tremors. You note that he was incontinent of urine, has pupillary constriction, and is salivating excessively. Which of the following medications would be most appropriate to manage this patient?