Which statement about a musician's responsibilities is true?

A musician's responsibilities encompass a range of professional and personal commitments that contribute to their effectiveness and success in musical endeavors. Arriving at rehearsals on time and prepared is essential because it demonstrates respect for fellow musicians, the conductor or music director, and the rehearsal process as a whole. Being punctual and well-prepared helps to ensure that everyone can make the most out of the limited time available for practice and collaboration, ultimately leading to a more polished and cohesive performance.

The other statements do not align with the core values of professionalism and dedication expected of a musician. For example, avoiding learning new music would limit their growth and versatility, neglecting instrument care might lead to poor performance quality and potential damage to the instrument, and only practicing before performances does not provide the consistent skill development required for long-term success.