Ack doesn't need to look at his keyboard while typing. his fingers automatically move over the keys as he types information into the computer. in the context of memory storage, which part of jack's brain is active in the memory required to perform these skills?

The correct answer is cerebellum.
Cerebellum is the part of a human brain which is active in the memory and required to perform skills such as automatic typing without having to look at the keyboard, for example. Apart from the remembering part, it also has a function when it comes to our motor skills and coordination.