What must pilots do to comply with currency requirements?

To meet currency requirements, pilots must engage in continuous training and practice. This includes not only maintaining a sufficient number of flight hours but also ensuring they are up to date with current regulations, procedures, and flight skills. Continuous training allows pilots to remain proficient in various flight scenarios and aircraft operations. It encompasses activities like recurrent training sessions, simulator exercises, and real-world practice flights, which contribute to overall safety and effectiveness in flying.

The other options do not align with the established guidelines for maintaining currency. Simply increasing flight hours without structured training wouldn't necessarily lead to the competency required for safety in various flying conditions. Focusing exclusively on solo flights might limit exposure to diverse flying scenarios and critical learning opportunities that typically occur in dual or instructor-led settings. Additionally, neglecting non-IFR operations would hinder a pilot's ability to operate in all types of flight conditions, which is essential for overall proficiency and compliance with regulatory standards. Engaging in consistent training and practice ensures that pilots are prepared for both IFR and non-IFR situations, keeping their skills sharp and ready for any challenges encountered in flying.