What feature is commonly used on articulated reduction gear arrangements for the correction of misalignment between the 1st reduction gear and the 2nd reduction pinions?

Correct Answer: Option A — Quill shafts.

Articulated reduction gears use quill shafts to provide flexibility between the first and second reduction stages. These shafts act as torsion springs, allowing for slight misalignments and dampening torsional vibrations, which protects the gear teeth from excessive stress concentrations caused by thermal expansion or hull deflection.