Select the living thing.

 - shoe
 - piano
 - barrel cactus
 - pushpin
A shoe is not a living thing.
Shoes do not have all of the traits of living things. They do not grow or respond to their environment. They do not need food or water.
A barrel cactus is a living thing.
Barrel cacti grow and respond to their environment. They need food and water. Barrel cacti are made up of many cells.
Barrel cacti are plants. They make their own food using water, carbon dioxide, and energy from sunlight.
A pushpin is not a living thing.
Pushpins do not have all of the traits of living things. They do not grow or respond to their environment. They do not need food or water.
A piano is not a living thing.
Pianos do not have all of the traits of living things. They do not grow or respond to their environment. They do not need food or water.