Which group used the legal system to challenge racial discrimination? unia naacp iww nwsa

Since being established in 1909 in New York City, the NAACP or National Association for the Advancement of Colored People became the United States' oldest and largest civil rights organization.

From its early days, it has served as a response to the violence against African Americans, and it played a major role during the civil rights era (1950s and 1960s).  

Answer is: Option B) NAACP

part a. there were 250 teenagers surveyed (100% of tenagers = 250)therefore 1 % = 250/100 = 2.5 76% = 1% x 76 = 2.5 x 76 = 190 teenagers of the 250 surveyed liked burgerspart b: jane surveyed 25% (which is equal to 50 teenagers, i.e. a quarter of the teenagers surveyed is 50) to get 100% we simply get 4 quarters, i.e. multiply 50 by 4 = 200 teenagers were surveyed by jane. part c: it is impossible to give an example where a percentage is greater than 100%, since, by definition , percentage means "per 100".

increase in population