Great Society reforms:. a) grew in popularity over the next decade. b) were generally proven to be cost-effective. c) made no dent in reducing hunger in America. d) contributed to the greatest reduction in poverty in American history. e) improved the lives of whites far more than blacks.

The answer is option D.

Explanation:

The Great Society reforms, which was declared in a 1964 speech by President Lyndon Johnson, were a certain set of laws and approach with the goal of reducing poverty and crime as well as bring racial justice to the USA.

It was very effective and in the end contributed immensely to the reduction of poverty all across the country. So the correct answer is D.

I hope this answer helps.