The correct answer is B. In Nassau County, New York
Step-by-step explanation:
The word "Levittown" refers to different massive suburbs that were created after the World War in the U.S. and Puerto Rico and that were called "Levittown" because these suburban developments were created by the company Levitt & Sons. The objective of these suburban areas was to prove an alternative to cities especially to those that return from the war and their families. The first Levittown was built in New York in Nassau County, Long Island between 1947 and 1947 and this was followed by a Levittown in Pennsylvania (1952), New Jersey (1958) and later Puerto Rico (1963). Therefore, it can be concluded the first Levittown was built in Nassau County, New York.