The four available storage classes are called auto, static, extern, and ____.

A) stack
B) intern
C) void
D) register

Storage Classes

Specifications in programming languages like C and C++ that determine the lifetime, visibility, and memory location of variables.

Auto

A keyword in the C and C++ programming languages that was originally used to declare automatic variables, now repurposed in C++11 to infer the type of the variable from its initializer.

Register

A small, fast storage location within a computer's CPU where specific types of instructions are stored and processed.