Final answer:
The correct statement made by the client that indicates effective teaching about propranolol is: "I can have a heart attack if I stop this medication suddenly."
Step-by-step explanation:
The correct statement made by the client that indicates effective teaching about propranolol is:
A) "I can have a heart attack if I stop this medication suddenly."
This statement is correct because propranolol is a beta blocker that works by blocking the beta-1 receptors in the heart. Stopping the medication suddenly can lead to rebound tachycardia, which is a sudden increase in heart rate, and may increase the risk of a heart attack.