Answer:
Rhea gave Kronos a rock to eat instead of baby Zeus.
Explanation:
In mythology, Rhea wanted to save her son Zeus from his father, Kronos. This was because Kronos had a nasty habit of eating his kids. So instead of giving Zeus to Kronos, Rhea gave Kronos a rock to eat instead of baby Zeus. Then Rhea hid Zeus in a cave where he would be raised by a goat until he asked to become Kronos' cupbearer.
