This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
It's letter C . Fish, dog and snake. .. spider is not a vertebrate it refers to be an invertebrate animals.
Vertebrates are animals that has a backbone or the vertebral column. 

Let us first go to letter a.
Birds have backbones, snake do have backbones! but spiders do not have.

So a ≠ the correct answer

Second, the b.
Turtles do have backbones, snails don't have backbones, and a lobster is a invertebrate or it do not have a bacbone.

So b ≠ the correct answer.

Third is the c.
Fish, have a backbone, Dog also has a backbone, and snake, as said also has a backbone.

So definitely c = the correct answer.

The answer is C. Fishes, dogs, snakes are vertebrates who have a backbone.