Which One of the Following Best Illustrates a Concept Map

Which one of the following best illustrates a concept map?

A) Alexandra puts the words force,gravity,velocity,acceleration,and time on a piece of paper; she then draws lines between pairs of related words and describes the relationships.
B) Bob draws a chart listing the sequence of events leading up to World War II in chronological order.
C) Calvin makes a list of concepts that biologists use to classify animals,including vertebrates,invertebrates,mammals,fish,birds,mollusks,crustaceans,and so on.
D) Donna lists characteristics of the concept canine.