Explanation:

- Option 1: pail - This refers to a bucket or container, often used for carrying liquid. It’s not relevant to describing someone's appearance.

- Option 2: pale - This means having a light or washed-out complexion or appearance. It is often used to describe someone who looks sick or tired. This is the correct choice.

- Option 3: pall - This can mean a cloth covering a coffin or something that darkens or shows gloom. It is unrelated to describing how a person looks physically.

- Option 4: peel - Typically refers to removing the outer covering or skin from something, like fruit. It doesn’t describe a person's appearance.