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

b) the fact that the artichoke is proud

Explanation:

This information affects the story the most, therefore should be included in the summary.

It tells us a lot about the artichoke, how he behaves, and this detail also influences his interaction with the muskrat. This way we see the character better and know what kind of development of the story we can expect.

For example, if artichoke wasn't that proud, maybe muskrat wouldn't even notice it, maybe he wouldn't feel irritated at artichoke's pride, and the interaction wouldn't resemble the quarrels.