Which of the following is considered an illegal hold or maneuver in wrestling?

The straight back suplay is considered an illegal hold in wrestling primarily due to safety concerns. This maneuver involves lifting an opponent and potentially driving them directly onto their back, which can lead to serious injury if not executed properly. Wrestling rules are designed to protect the athletes, and any hold that poses a high risk of injury is typically deemed illegal.

In contrast, the half nelson, single leg takedown, and arm drag are all legal techniques that wrestlers use frequently in competition. These moves emphasize control and technique rather than brute force, allowing for a safer, more strategic approach to the sport. Knowing the rules regarding illegal holds is essential for ensuring a fair and safe wrestling environment.