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 using the butterfly stroke,breaststroke,and backstroke.
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 that they can solve one at a time.