Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to tell if a kitten is healthy before you adopt it [title] Look into the kitten's eyes. [step] A kitten's eyes should be clear and bright. They shouldn't be runny, for instance, and they should also be able to focus easily on your finger.

Ending1: [substeps] When the kitten sees you touch it, it becomes more frightened. [title] Consider how many hours your kitten sleeps. Ending2: If you notice discharge around the eyes, that could indicate a protruding third eyelid, swollen conjunctiva, or another health problem. [substeps] Conjunctivitis is a common feline eye disorder where the mucus membrane located on the inside of the eyelid becomes inflamed and coats the eyeball. Ending3: The kitten's eyes should also be bright and playful in color. If kittens have clear eyes, they are likely a healthy kitten. Ending4: They should not have glazed pupils, which can be a sign of sickness or injury. [substeps] If your kitten is overweight, some changes to her physical appearance can come naturally with age.

Answer format: ending1/ending2/ending3/ending4