Not sure if you meant to write it the other way around but it is actually answer choice C that is better than answer choice E.
Answer choice E is a difficult answer choice to definitively cancel out as incorrect, but it is wrong because it is not paralleling the purpose of the art. Cameron is trying to depict fictional/mythical scenes and make illustrative art (line 16). She is not trying to portray reality as would a documentary.
Answer choice C is supported by lines 48-50 in which we are told that she created her works of art using everyday objects. In addition to this, the grandeur of the art is paralleled in lines 43-46 (where her work is called a treasure and lines 54-57 (where her works are described as being well received despite the amateur quality).
I hope this helps. Please let me know if you have any other questions!