Answer:
d. To investigate a possible attack
Explanation:
Massasoit Sachem also known as Oosemequan was the leader of the wampanoag confederacy and he was born in c. 1581 in Ousamequin and he died in c. 1661 at the age of 80 years old.
The subjects of Oosemequan were left devastated by various epidemics such as smallpox, as well as attacks from the Narragansetts. Consequently, Oosemequan sought for defense from the colonists at Plymouth Colony by forming an alliance with them on the 22nd of March, 1621.
When the English colonists were celebrating with gun fires and having a thanksgiving dinner in honor of their victory in defending Oosemequan during an attack put forward by some dissident elements from Cape Cod, as well as for the bountiful harvest. Sequel to these gunfire celebrations, Oosemequan came with 90 men because he assumed or thought it was an attack.
Hence, Oosemequan brought 90 men to Plymouth in the fall of 1621 to investigate a possible attack.
