What Statement Most Accurately Describes a Person Who Has Mastered

Multiple Choice

What statement most accurately describes a person who has mastered basic facts?

A) He or she can use a model or a picture to figure out the answer to a basic fact problem.
B) He or she has a conceptual understanding of the basic facts and can access her background knowledge to,with some time,figure out the answer to a basic fact problem.
C) He or she has obtained a set of essential understandings and progressed through a set of stages so that she just "knows" the answers to certain basic fact problems.
D) He or she can use a set of manipulatives and reasoning to figure out the answer to a basic fact problem.