Which keys are included in the Circle of 5ths order for flats?

The Circle of 5ths is a crucial concept in music theory that illustrates the relationship between keys, both major and minor, and helps musicians understand key signatures. The order of keys that includes flats starts from C major, which has no sharps or flats, and sequentially introduces flat keys by adding flats as you move around the circle.

In the correct answer, the sequence begins at C major and moves counterclockwise through the following keys: F major (1 flat), B flat major (2 flats), E flat major (3 flats), A flat major (4 flats), D flat major (5 flats), and G flat major (6 flats). This reflects the systematic addition of flats as you progress further from C major. Each successive key signature adds another flat, showcasing the relationship of each key to its position in the circle.

The other options do not properly represent this progression of keys that follow the Circle of 5ths specifically for flats, either by including sharps or incorrectly ordering the flat keys. Understanding this ordering helps to solidify concepts in key signatures and prepares students for more advanced music theory.