SAT Question 213248f7: Words In Context answer and explanation

English - Words In Context - Meaning Of Word In Literary Prose
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The following text is adapted from Lewis Carroll’s 1865 novel Alice’s Adventures in Wonderland. “The second thing is to find my way into that lovely garden. I think that will be the best plan.” It sounded like an excellent plan, no doubt, and very neatly and simply arranged; the only difficulty was, that Alice had not the smallest idea how to set about it.
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Difficulty:Easy
As used in the text, what does the word “simply” most nearly mean?