B lack of access to government al institutions
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!
The Truman Doctrine was an American foreign policy whose stated purpose was to contain Soviet geopolitical expansion during the Cold War. It was announced to Congress by President Harry S. ... More generally, the Truman Doctrine implied American support for other nations thought to be threatened by Soviet communism.