What are two ways in which comorbidity increases complexity in patient treatment?

The choice that highlights how comorbidity increases complexity in patient treatment is accurately identified. When a patient has multiple conditions, it is crucial to consider how treatments for one condition can interact with those for another. This interconnectedness can lead to contraindications, where one treatment may not be suitable due to the presence of another condition or the medications prescribed for it. Additionally, the likelihood of adverse drug reactions increases as patients may be placed on multiple medications to manage their various health issues. Thus, healthcare providers must navigate these interactions carefully, which complicates treatment planning and requires more intensive monitoring.

In contrast, the other answers describe aspects that do not contribute to increased complexity. Increased treatment adherence and improved patient outcomes typically suggest a simplified treatment process. Similarly, simplified patient management and reduced need for monitoring imply fewer complexities, while lower healthcare costs and enhanced overall health do not address the intricacies introduced by managing multiple conditions simultaneously.