Final answer:
Ares was the child that Hera bore out of jealousy towards Athena and anger towards Zeus.
Step-by-step explanation:
The child that Hera bore out of jealousy towards Athena and anger towards Zeus, who represents a threat to Zeus, is Ares. In Greek mythology, Ares is the god of war and the lover of Aphrodite. Hera, who was married to Hephaestus, gave birth to Ares as a way to retaliate against Zeus.