I'm pretty sure that it's D.
An adjective is a descriptive word
In this sentence, "natural" is the adjective.
Wonder is used as a noun, so even though it is a descriptive word, it is used like it is an object, so IN THIS SENTENCE it is not an adjective.
"Grand" in "Grand Canyon" is part of the title, and is also not considered an adjective
Supporting Evidence are the facts or details that back up a main idea, theme or a thesis.
Well "I" is the person and notes and margins is the number cuz theres more than one