Final answer:
Asthma is a contraindication for taking propranolol due to the risk of exacerbating asthma symptoms and triggering an asthma attack. Hence the correct answer is option C
Step-by-step explanation:
The nurse should identify asthma as a contraindication for taking propranolol. Propranolol is a beta-blocker medication that works by blocking beta-1 receptors, which can cause narrowing of the airways in individuals with asthma. By blocking these receptors, propranolol can exacerbate asthma symptoms and potentially lead to an asthma attack.
Hence the correct answer is option C