B - Dramatic Increase in Elementary School Enrollment in the 1970's
A is incorrect as job opportunities are not proportionate to birth rate.
C is incorrect as social security collections do not occur until you are of age - 62.
D is incorrect as the youth culture is always created with whatever youth is present - it's mostly referred to as the young culture or kids culture more than anything and would not be created only because of a baby boom.
Hope this helps!
After ratification, Congress set dates for the first federal elections and the official implementation of the Constitution. Elections were set to take place from Monday, December 15, 1788, to Saturday, January 10, 1789, and the new government was set to begin on March 4, 1789.
It is B - new diseases were introduced by the arrival of the Spanish