Which One of the Following Illustrates Use of a Rubric

Which one of the following illustrates use of a rubric in a classroom assessment?

A) Responses to a 10-point essay in a history class are given 5 points for describing historical events accurately, 4 points for explaining how the events are interrelated, and 1 point for using complete sentences throughout the essay.
B) In a swimming test, students are asked to swim one lap each of the breaststroke, backstroke, and crawl.
C) A science test has 30 multiple questions, 10 alternative-response questions, 3 short-answer questions, and one essay.
D) A math assignment presents a complex problem with several parts and asks students to break it down into at least five simpler problems.