The correct answer is B) He supplied seeds and taught them how to farm and fish in the area.
The assistance from Squanto that was most important to the Plymouth colony was "He supplied seeds and taught them how to farm and fish in the area."
Squanto was a member of the Patuxent Indian tribe in the territory where the colony of Plymouth was settled. He became the liaison between the tribe and the English colony members in New England. Squanto learned English when he was kidnaped by an Englishman named Thomas Hunt and was sold as a slave in 1614. Five years later he returned to his land but most of its tribe had died. Basically, he was the last one to survive. That is how he could serve as a liaison between the English and the Pokanokets.