Which of these organisms is a vertebrate?

Horse, it’s the only thing in the list with a spine

Please give brainiest if its correct, have a nice day! and good luck on the test!

Horse.

Explanation: The vertebrates can be defined as the organism that have spinal cord or backbone. The backbone is also known as vertebrae.This helps the animal to stay straight and maintains the posture of the animal.

The animals such as reptiles, mammals, birds, fishes and amphibians have vertebral column.

Here, the horse is a mammal that have backbone.

the cell theory states that all living things including animals, as well as plants, are made of cells.