Final answer:
The best part about music class, according to the student's literacy experience, is playing the piano. This activity aligns with the concept that hands-on learning and making mistakes are vital for progression, similar to acquiring a language.
Step-by-step explanation:
According to the provided information, learning to play piano and memorizing the location of the keys are literacy experiences mentioned by the student. Therefore, the best part about music class, as per the statement given, would be c) Playing the piano. Playing an instrument like the piano provides a hands-on experience in music literacy, akin to learning a language where making mistakes is part of the learning process.
Just as language can be picked up through interactive conversation with proficient speakers, music can be better grasped through practical engagement with the instrument and potentially with more skilled musicians. The idea of embracing mistakes to enhance learning applies well to music classes, as does the concept of 'Every good boy does fine' to remember the lines of the treble clef when reading sheet music.