单选题 Why are American scholars worried about education today?

A、 The STEM subjects are too challenging for students to learn.
B、 Some Asian countries have overtaken America in basic sciences.
C、 America is lagging behind in the STEM disciplines.
D、 There are not enough scholars in humanistic studies.

【正确答案】 C

【答案解析】从第二段段落后两句“There is considerable and justified concern that the United States is falling behind much of the rest of the developed world in these essential disciplines．”我们可以推断出America is lagging behind in the STEM disciplines。故答案为C。