The question asks about what the beak is formed by. The correct answer is option 2, jaws. A beak is a structure found in animals that do not have teeth and is used for various functions such as eating, grooming, and defense. The beak is formed by the upper and lower jaws of the animal, which are often highly specialized depending on the species. For example, in birds, the beak is made of a hard, keratinous material that covers the jawbones. It is shaped differently in different bird species based on their diet and feeding habits. Some bird beaks are long and slender for probing into flowers or burrows to extract food, while others are short and stout for cracking open nuts or seeds. In summary, the beak is formed by the jaws of the animal and its shape and size can vary depending on the species and its specific needs.