Why was the physical salute used during the Pledge changed in 1942?

The correct answer is C: It resembled Nazi salutes.

In 1942, the physical salute used during the Pledge of Allegiance was changed because the original gesture began to draw comparisons to the salutes used by the Nazi party in Germany. This association was viewed negatively, especially during World War II, leading to the adoption of the hand-over-heart gesture that is now widely used.