Answer:
B. To gain support for a law that would improve student achievement
Step-by-step explanation:
This excerpt from a speech by US secretary of education Arne Duncan makes many references to secretary's purpose of speech i.e. gaining support for a law. These references are; "replace it with a law that..." , "A law that recognizes that no family..." , "A law that recognizes the critically hard" and some others. So, option A and C cannot be correct.
Of options B and D, option B is more correct because the proposed law (for which the secretary wants to gain support) is not just about children to begin learning at a very young age , the law also suggests to consider many aspects of the education to improve students' achievements. The aspects of education which this proposed law would consider to improve students' achievements are; no family should be denied preschool for their children , critically hard, important work educators , recognizing that teachers need better preparation, better support, and more resources , and that educational opportunity isn’t an option, it’s a civil right, a moral imperative.