A B-flat major triad contains which of the following notes?

• C
• D
• E
• F-sharp

A B-flat major triad contains the following notes:

• B-flat
• D
• F

A B-flat major triad consists of three notes - the root note (B-flat), the major third (D), and the perfect fifth (F). Therefore, the correct notes are:

• B-flat
• D
• F

To determine which notes are present in a B-flat major triad, we need to understand the structure of a major triad.

A major triad consists of three notes: the root, the major third interval, and the perfect fifth interval.

For a B-flat major triad, the root note is B-flat.

To find the major third interval, we count up four half-steps from the root note. Starting from B-flat, we have B, C, C-sharp, and D. Therefore, the major third is D.

Similarly, to find the perfect fifth interval, we count up seven half-steps from the root note. Starting from B-flat, we have B, C, C-sharp, D, D-sharp, E, and F. Therefore, the perfect fifth is F.

Therefore, a B-flat major triad contains the notes B-flat, D, and F.

From the given list, the correct answers would be:
• D (because it is the major third)
• F (because it is the perfect fifth)

The notes C and E are not part of the B-flat major triad, so they are not included in the options. Similarly, F-sharp is not part of the B-flat major triad, so it is also not included in the options.