Which of the following should be monitored for long-term management of asthma?

Monitoring adherence and inhaler technique is vital for the long-term management of asthma. Adherence refers to the patient's ability to follow prescribed medication regimens, which is crucial for maintaining asthma control and preventing exacerbations. Inhaler technique is equally important, as improper use of inhalers can lead to inadequate medication delivery to the airways, resulting in suboptimal asthma control.

Regularly assessing these factors helps healthcare providers identify any issues that could compromise the patient's treatment plan. For instance, if a patient is not adhering to their medication or is using their inhaler incorrectly, they may experience worsening symptoms or attacks, which could be preventable with proper education and support.

Other aspects such as daily exercise routines, dietary habits, and medications for unrelated conditions may be relevant to overall health management, but they do not have the direct impact on asthma management that adherence and inhaler technique do. Therefore, focusing on B is essential for effective asthma management and improving patient outcomes.