The answer I believe is c.secondary
Alcholicism kills brain cells and two suggestics would be to go to a rehab or speak to a therapist
Yes, there are many of these kind of procedures, and here are some examples, like deep palpation and percussion, examination of the ear-drum or inside the nose
People with dementia tend to become aggressive and have catastrophic reactions for a number of things, it could be that they simply may not be feeling well or might be feeling rushed or confused. Many times people with dementia may be unable to recognise their own needs, how to achieve them, or to let other people know what it is that they need. This usually causes them to act in ways that others might find challenging, including aggressively.