What is another name for pump pliers?

The correct choice is associated with the most common alternate term used for pump pliers. Pump pliers, which are also known as channel-locks, are versatile tools that can grip and hold various sizes of nuts, bolts, and pipes. The design of pump pliers features an adjustable pivot point, allowing the jaws to open wider than many other types of pliers. This design is particularly useful in plumbing and automotive applications.

The term "channel-lock" originated from a brand of pump pliers, becoming synonymous with that style of tool in many circles. This makes it an accepted and recognized alternative name.

The other terms listed refer to different types of pliers designed for specific functions. Long nose pliers have elongated jaws for reaching into tight spaces, diagonal cutting pliers are designed for cutting wire and other materials, and side cutting pliers are focused primarily on cutting and gripping. Each of these tools serves a unique purpose that differs significantly from the adjusting and gripping capabilities of channel-locks.