A pescatarian is someone who consumes no animal products except for А chicken B milk C eggs D fish​

D, fishes

Explanation:

In my language, (called cebuano,) we call fishes pescao

so I kinda noticed that it was similar to "pescao"/ "fish" in the beginning of the word pescatarian.

i believe it is a. a segment : )

your word would be isle.

isle is an island or peninsula especially a small one.

if you add the letter "a" you get aisle, which is a passage between 2 rows of something like chairs, shelves, or something else.