Final answer:
The memory that uses the hard drive to act as an overflow for RAM when it runs out is called virtual memory which is a secondary type of memory.
Step-by-step explanation:
The type of memory that uses the hard drive to substitute for RAM is known as virtual memory. When a computer runs out of RAM it uses a portion of the hard drive, designated as swap space, to function as additional memory. This technique allows for more content loaded into memory by using this section of the hard drive as an overflow for RAM.
However it’s important to note that accessing data from the hard drive is significantly slower compared to RAM. The correct option for the type of memory that uses the hard drive to substitute for RAM is: Option 1: Secondary.