Choose the word which is different from the rest.

The answer is: C. Trunk

The other options are all parts of an animal’s body, while a trunk is a part of a tree.

• Nail is a hard, pointed piece of keratin that grows on the tip of a finger or toe.
• Feather is a light, flexible structure that grows on the skin of birds.
• Tail is a long, flexible appendage that grows at the rear end of an animal’s body.
• Fir is a type of coniferous tree that has needle-like leaves and cones.