"Wanita itu adalah vegetarian."
Terjemahan:The woman is vegetarian.
This application is too strict. Whether you want to use "the" or "that" depends on sentences before. But on this exam, only lays a single sentence. You are not allowed to judge "that" is only right answer.
Be consistent please. This question is asked twice. On previous question, I answered "the". On next question, I answered "that". But the answer for the first one or the second one question is totally contradict.