Final answer:
The Pharaoh refused and made the Hebrews' labor even harsher.
Step-by-step explanation:
When Moses told the Pharaoh to let his people go, the Pharaoh did not agree immediately or offer to negotiate terms. Instead, he refused and made their labor even harsher. This can be seen in the biblical account of the Exodus, where the Pharaoh only agreed to let the Hebrew people go after experiencing divine punishments. These punishments were inflicted by the Hebrew god as a way to convince the Pharaoh to release the Hebrews.