Which major key has one flat in the key signature

Question

b majoy
c major
f major
g major

Answer 1

The major key with one flat in the key signature is F major.

Here's a quick overview of the keys mentioned:

• B major has five sharps.
• C major has no sharps or flats.
• F major has one flat (B♭).
• G major has one sharp (F♯).

So, the correct answer is F major.