The correct answer is C. kangaroo : marsupial.
A pachyderm is a large, thick-skinned mammal, such as an elephant, rhinoceros, or hippopotamus. A marsupial is a mammal that gives birth to very immature young that then develop further in a pouch on the mother’s body.
A mantis is an insect that is known for its ability to change its color and shape to blend in with its surroundings. A rodent is a mammal that has sharp front teeth that are used for gnawing.
A poodle is a type of dog that is known for its curly hair. A feline is a mammal that belongs to the cat family.
A zebra is a striped mammal that is native to Africa. A horse is a large, hoofed mammal that is used for transportation and riding.
A tuna is a type of fish that is known for its high nutritional value. A mollusk is a soft-bodied animal that has a hard shell.
The relationship between elephant and pachyderm is that an elephant is a type of pachyderm. The relationship between kangaroo and marsupial is that a kangaroo is a type of marsupial. The other options do not have the same relationship.