In Alzheimer's disease, the pathology seen in the brain is -

Ans. is 'a' i.e., Atrophy of parietal and temporal lobesGross pathology in Alzhiemer's disease:o Diffuse cerebral atrophy of the hippocampus, amygdala and entorhinal coex.o Enlargement of the ventricles caused by neuronal loss.Grossly the brain shows a variable degree of coical atrophy marked by widening of the cerebral sulci.These changes are most pronounced in the temporal and parietal lobes: Frontal lobes can also be involved.