So, it looks like 3 out of 4 are items; which would be the el disco compacto, el libro, and la revista. Therefore, the clothing store, or la tienda de ropa is the one that does not belong.
A. salido is the correct past participle for the Spanish verb salir. Past participle is formed by adding the suffixes -ado, or -ido to the root of the verb, depending on the last letter of the verb.