Final answer:
The person who supported the Thebans and did not support Polyneices was Eteocles.
Step-by-step explanation:
The subject of this question is History. The question asks which person supported the Thebans and did not support the proud, like Polyneices and his army. From the given options, the correct answer is Eteocles. Eteocles is mentioned in the provided excerpt from the play 'Antigone' as one of the brothers who died, and he is described as the one favored by Creon with funeral rites. This shows that Eteocles was on the side of the Thebans and not supportive of Polyneices.