I would assume static and awkward.
I believe the answer to this question is C.
Answer:
the way you worded it is a little strange but the word I think you are looking for is holding.
In short, dementia is the term to describe memory loss, specifically in the older generation. Oftentimes, old information interferes with current information in the beginning, and the sufferer of dementia gets worse and worse as time passes, sometimes gradually and sometimes very quickly.