Explanation:

Sandals , slippers and shoes all of them are footwear items.Sandals are an open type of footwear, consisting of a sole held to the wearer's foot by straps going over the instep and, sometimes, around the ankle.Slippers are light footwear that are easy to put on and off and are intended to be worn indoors, particularly at home.Shoe is an item of footwear intended to protect and comfort the human foot. Shoes are also used as an item of decoration and fashion, but a shirt is a type of clothing worn by both men and women and hence shirt is the odd one out so option 2 is the correct answer.