Correct Answer: Tadpole

Solution : The third option is the correct choice.

A tadpole is the young form of a frog, which specifically refers to the larval stage in the life cycle of a frog, occurring in aquatic environments before undergoing metamorphosis into an adult frog.

The meanings of the other options are as follows:

• The kitten is a young cat.

• Pup is young for a dog.

• Antelope is a type of ungulate mammal.

Therefore, the correct answer is tadpole.