Which of the following Native Americans acted as both a guide and translator for Lewis Clark they explored Louisiana Territory?

The Native American who acted as both a guide and translator for Lewis and Clark during their exploration of the Louisiana Territory was Sacagawea.

She was a member of the Shoshone tribe and played a crucial role in the expedition's success.

While other Native Americans provided assistance and guidance, Sacagawea's skills in both language and navigating the unfamiliar territory made her an invaluable asset to Lewis and Clark.