If you receive a 1 on the ideas and content rubric, it may mean that
a. the writing is exceptionally clear, focused and interesting.
c. the writing is characterized by main ideas that stand out.
b. the writing lacks a central idea or purpose.
d. the writing holds the reader’s attention throughout.

The correct answer is B. The writing lacks a central idea or purpose.

Explanation:

In educational contexts, a rubric is a tool, usually a chart that contains the criteria for evaluating or assessing a task such as a presentation or text. For doing this rubric  propose different criteria such as use of the language, content and ideas, coherence, etc that are used to evaluate the task, a numerical or scoring that strategy that usually goes from 0 or 1 to 5 or 10, in which 0-1 means the student did not achieve at all the criteria and finally definitions that describe the criteria according to each score.

This means if you receive a 1 or a 0 is some criteria is because you did not achieve the requirements of that aspects and therefore got the lowest score, therefore if you receive 1 on the ideas and content rubric this means your text or presentation does not clearly develop the central idea or organizes correctly the information to achieve the main purpose or that "The writing lacks a central idea or purpose".

answer; /// i do believe the correct answer is (c) public education;

this isnt an english question.