Read the beginning of a legend titled "The Artichoke and the Muskrat." On the shore of a lake stood an artichoke with its green leaves waving in the sun. Very proud of itself it was and well satisfied with the world. In the lake below lived a muskrat in his tepee, and in the evening as the sun set he would come out upon the shore and wander over the bank. One evening he came near the place where the artichoke stood.

"Ho, friend," he said, "you seem rather proud of yourself. Who are you?"

"I am the artichoke," answered the other, "and I have many handsome cousins. But who are you?"

"I am the muskrat, and I, too, belong to a large family. I live in the water. I don't stand all day in one place like a stone."

"If I stand in one place all day," retorted the artichoke, "at least I don't swim around in stagnant water and build my lodge in the mud."

Which detail should be included in a summary?

the artichoke's position on the shore of a lake
the fact that the artichoke is proud
the size of the muskrat's family
the fact that the muskrat's home is called a lodge