(A)

No. 11

1 Evidence that shows people with dementia sleep more.

2 Various sleep disorders reported by young people.

3 Lifestyle changes as a treatment for dementia.

4 The sleep patterns of middle-aged people.

No. 12

1 Protein buildup is not always a sign of dementia.

2 Participants’ sleep patterns were likely not caused by dementia.

3 Better treatments for dementia will soon be developed.

4 Middle-aged people generally have difficulty sleeping.