Which of the Following Research Findings Does Not Provide Evidence

Which of the following research findings does not provide evidence to support the achievement gap between White and non-White youngsters?

A) Twelve percent of the high schools in the United States produce half of the country's dropouts, and nearly half the nation's Black and Latino students attend one of these schools.
B) In the District of Columbia, which serves a predominately Black population, only 8 percent of all eighth graders are judged proficient in math, and only 12 percent in reading.
C) In California, eighth-grade White students who are proficient in math outnumber Latino students by a ratio of 4 to 1.
D) The Harlem Children's zone demonstrated positive effects.