What is an advantage of an animal with bilateral symmetry having sense organs and nerve cells concentrated at the anterior end of the body

In this question, we are referring to cephalization. Cephalization was evolved with the development of sense organs and nerve ganglia concentrated at the front end of an animal, producing a head region (Cephalo means head). These sense organs help in guiding the mouth toward food as the animal moves forward with its anterior part in front. Animals with a bilateral symmetry move with their head in the front.

i think it would be b. tissue because an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.