Juanita has alzheimer's disease and her memories for people and events are lost, but she displays an ability to form new implicit memories of nonverbal tasks.

The given blank can be filled with explicit memory.  

Explanation:

The declarative memory or explicit memory refers to one of the two prime subdivisions of long-term memory. The explicit memory needs conscious thought like recalling or remembering something. It is what the majority of the individuals possess in mind when they think of memory. This form of memory is usually associative, that is, the brain associates the memory together.  

its 42

i say its d?

the answer is c a tornado