The correct answer is B: Orion Arm
There is clear consensus that the Milky Way is a spiral galaxy with a central barred region.
Spiral arms of stars and gas emanate from each end of the central bar, but exactly how many is not yet conclusively known. Current evidence strongly suggests that there are four major arms, plus some minor arms and spurs.
Our Galaxy is not a perfect pinwheel; there are a few quirks in its structure.
This includes the minor arms, which are less prominent, less dense and often thinner than major arms. The Solar System resides in a minor arm called the Orion Arm, which lies between the Perseus and Sagittarius Carina Arms.
The text above is from Jake Foster's publication Galaxies.
Header image: Milky Way photographed from South Africa by Kyle Goetsch on Unsplash