Question

when talking about computer memory, what is a register? a large latch a group of latches operating together a special type of logic gate used for storing bits

Explanation:

A register in computer memory is a group of latches operating together. Latches are basic memory elements. A single latch can store one bit. When multiple latches work in unison (a group of latches operating together), they form a register which can store multiple bits (e.g., 8 - bit register, 16 - bit register etc.). A large latch is just a single memory element (can store one bit if it's a simple latch conceptually, but in reality, a register is more than one). A logic gate is for performing logical operations (like AND, OR, NOT) and not for storing bits in the sense of a register.

Answer:

A group of latches operating together