A result of true selma voting rights marches was that

-few Americans felt their effect

-support for voting rights decreased

-supposed for voting rights increased

-the Twenty-Fourth amendment passed

The correct answer is support for voting rights increased.

The last statement is incorrect because the 24th amendment passed in 1964, one year before the Selma Marches took place.

Support for voting rights did not decrease, as many Americans saw the senseless violence used against African-Americans who were simply fighting for their right to vote.

The Selma Marches inspired millions of individuals to get involved in American politics in order to fight the injustices within our society.

This shows that only the third option can be correct.