Final answer:
Haimon initially disagrees with his father's decision to execute Antigone and argues in her defense.
Step-by-step explanation:
When Haimon's father asks him how he feels about the king's decision to execute Antigone, Haimon initially responds by expressing his disagreement with the decision. He argues that Antigone should be honored for her actions, as she was obeying the eternal laws of right and wrong. Haimon pleads with his father to reconsider his decision and warns him of the consequences if he goes through with Antigone's execution.