Answer:
d. Boston’s tightly knit Irish-American community in South Boston fought integration violently.
Explanation:
Boston's politics changed by the end of the World War II. Also by then the neighborhoods of Boston started to lose their ethnic identities. The Irish Americans living in Boston acknowledged with alarm the news reports on the "Troubles" started in Northern Ireland.
Most of the Irish American living in Boston involved in the bushing controversy in the year 1970.
Thus the answer is
d. Boston’s tightly knit Irish-American community in South Boston fought integration violently.