Final answer:
The official seal of the Massachusetts Bay Colony conveyed theocratic governance and Puritan values, reflecting their religious goals and societal expectations.
Step-by-step explanation:
The overall message of the official seal of the Massachusetts Bay Colony reflected the colony's Puritan values and its focus on theocratic governance. The seal depicted a Native American uttering the phrase "Come over and help us," which emphasized the Puritanical aspiration to spread their religious beliefs and convert the native population. This was in line with Governor John Winthrop's vision of the colony as a "city upon a hill" — an example of moral and righteous living meant to glorify God and showcase a reformed Protestant community. Thus, the message of the seal represents theocratic governance and Puritan values (option D), aligning with the religious and societal aspirations of the time rather than secular goals like unity through diversity, religious tolerance, or a specific commitment to agriculture and trade.