Read the following excerpt from the article "vision, voice and the power of creation: an author speaks out," by t. a. barron, and answer the question that follows:

another way to tap the power of imagination is through place. my own background as a writer is rooted in nature, having grown up reading henry david thoreau, rachel carson, and john muir long before i ever dipped into madeleine l'engle, lloyd alexander, ursula le guin, e. b. white, or j. r.r. tolkien. my early writings were really nature journals; at nine, i wrote a complete biography—of a tree. (it was a once-majestic chestnut tree not far from my home.) so it should come as no surprise that i view place as much more than just a setting for a story. it is, in truth, another form of character, no less alive and complex, mysterious and contradictory, than the richest character in human form.

the author writes that he "wrote a complete biography—of a tree." what message is implied about the tree with this statement?

the author couldn't think of any other subject for a biography.
the author didn't think a partial biography was enough.
the author didn't want to speak for the tree.
the author believed the tree had a life story, like a person.