Choose the word which is different from the rest.

The answer is brain. The other three options are all sense organs, while the brain is not. The brain is the organ in the human body that controls all voluntary and involuntary actions. It is also responsible for processing information from the senses, making decisions, and storing memories.

The eye is a sensory organ that detects light and converts it into neural signals. The ear is a sensory organ that detects sound and converts it into neural signals. The nose is a sensory organ that detects odors and converts them into neural signals.