Answer:
What should convince you most is that Donald is seventy years old and he has lost his ability of fluent and accurate conversation ( finds it difficult to remember his last statement, to be able to know what next to say), adding to the fact that his personality has become erratic.
Explanation: Alzheimer's disease is a type of demantia that causes problem with memory,thinking and behavior.
Because he is not only having a loss of memory, but he is also behaving erratically, which is a special attribute of Alzheimer's disease from other demantia disease, that means the doctor is right.
Donald is 70 years old, and Alzheimer's disease is most likely to be seen in people from 65years old upward, it is very convincing that the doctor is right.
IF ALL THIS FACT WAS NOT ABLE TO CONVINCE YOU, DONALD SHOULD GO FOR THE SAME DIAOGNOSES IN ANOTHER HOSPITAL, PERFORMED BY ANOTHER DOCTOR, SO THAT YOU CAN BE CONVINCED IF THE TWO RESULT ARE THE SAME.
