- A body can be a part of a robot
- A computer controls a robot
- So, a computer can control the body of a robot

- An animal 's brain controls that animal
- The brain is a part of the central nervous system
- Hence, an animal's brain is a part of the nervous system that controls that animal

- An animal's brain is a part of the nervous system that controls that animal
- The nervous system is used for controlling the body
- So, the brain can control animal body through the nervous system

- A computer can control the body of a robot
- The brain can control animal body through the nervous system
- Hence, the computer in a robot and the brain in an animal both control the body of that robot / animal

- The computer in a robot and the brain in an animal both control the body of that robot / animal
- Controlling is a kind of function
- Hence, the computer in a robot and the brain in an animal both perform the function of controlling the body of that robot / animal

- The computer in a robot and the brain in an animal both perform the function of controlling the body of that robot / animal
- If two things perform the same function then those two things are similar
- Hence, the computer in a robot is similar to the brain in an animal

Therefore, the computer in a robot is similar to the brain in an animal
Question
The students in an engineering class built a robot that stacks wooden blocks. A built-in computer controls the movement of the robot. The computer in the robot performs a function most similar to which part of the human body?

Context
- A body can be a part of a robot 
- A computer controls a robot 
- An animal 's brain controls that animal 
- The brain is a part of the central nervous system 
- Controlling is a kind of function 
- The nervous system is used for controlling the body 
- If two things perform the same function then those two things are similar