Who was the mother of the Olympian gods?

The story behind the answer

Rhea is correct because, in Greek myth, she is the Titaness who bore the core Olympian generation: Hestia, Demeter, Hera, Hades, Poseidon, and Zeus. Married to Cronus, she famously saved newborn Zeus by hiding him in Crete and giving Cronus a swaddled stone to swallow. Zeus later freed his siblings, and together they overthrew the Titans to found the Olympian order.

To remember: “Rhea raised Olympus”—she births the roster of Olympians. Don’t confuse her with Gaia, the primordial Earth and grandmother of the Olympians; Hera and Demeter are Rhea’s daughters and Olympian goddesses themselves, not their mother.