Brain › Science & NatureAlzheimer's disease primarily affects which part of the human body?LungsSkinHeartBrainAnswerThe correct answer is D) Brain.More Science & Nature questionsWhat is the standard atomic weight of a Plutonium nucleus?What is the standard SI unit for mass?Which of the following is not one of the groups on the periodic table?What is an example of a bacterial pathogen?71% of the Earth's surface is made up ofWhat is the largest planet in the Solar System?Play Brain · Practice