What are the primary triads in the key of C major?

In the key of C major, primary triads are the three most fundamental chords that form the basis of harmony. These triads are built on the first, fourth, and fifth degrees of the C major scale.

The first degree is C major, which is formed by the notes C, E, and G. The fourth degree is F major, built from the notes F, A, and C. The fifth degree is G major, made up of the notes G, B, and D. Together, these chords serve as the main pillars of harmony in the key of C major, creating a strong and stable foundation for compositions.

This choice includes the correct triads that support the tonality of C major and are commonly used in various musical contexts.