Read the paragraph from the section "The Gender Gap." Cimpian said there has been much focus on getting girls interested in science,
technology, engineering and math (STEM). But even 12 years later, the gender gap is
still there. There also haven't been any changes in how teachers are seeing girls. He
called this "alarming."
How does this paragraph reflect a central idea of the article?

A) It suggests that schools have been making the changes needed to close the
gender gap.
B) It suggests that Cimpian thinks teachers do not want to learn how to teach girls
math.
C) It suggests that no matter what schools do girls will not be as good as boys in
STEM.
D) It suggests that the attempts to close the gender gap in math have not been
successful.