Option B: “sales department of the store” refers to the department concerned with the selling of goods and services of the store. This makes a coherent sentence. Hence, this is the correct option.
Option A: “sails” refer to the tent like fabrics which are attached to the mast of a boat, that catch the wind and move the boat in its direction. It is irrelevant in the given sentence. Hence, this option is incorrect.
Option C: “snails” are living creatures. It is irrelevant in the given sentence. Hence, this option is incorrect.
Option D: “salt” is irrelevant within the given sentence. Hence, this option is incorrect.