What does the Mixolydian mode consist of?

The Mixolydian mode is characterized as a major scale with a flattened seventh degree. This unique feature differentiates it from the standard major scale, which has a natural seventh. Specifically, if we take the G Mixolydian scale, it consists of the notes G, A, B, C, D, E, and F. Here, the seventh note (F) is flattened to F natural, which aligns perfectly with the description provided in the correct answer.

This mode is often used in various musical styles, including folk, rock, and blues, giving it a distinct sound that can evoke a sense of resolution while still providing a rich harmonic texture. The other options describe different modes or scales that don't conform to the definition of the Mixolydian mode by either altering the wrong degrees or using different root notes altogether.