The most dominant line usage are the vertical lines of the trees.
To me, the golden spiral is the proportional basis that makes the most sense. In a landscape painting the views eye is automatically directed to the center of the spiral and can be used by the artist to put their subject in the eye of the viewer.
You didn’t send the picture but I had a similar question in art history I, so it’s probably B
The answer would be 1.5 beats because when there is a dot it means it’s 1.5 times the original note.
