7) keeping these impressions in view, i was cautious in what i said before the young lady; for i could not be sure that she was sane; and, in fact, there was a certain restless brilliancy about her eyes which half led me to imagine she was not. i confined my remarks, therefore, to general topics, and to such as i thought would not be displeasing or exciting even to a lunatic. she replied in a perfectly rational manner to all that i said; and even her original observations were marked with the soundest good sense, but a long acquaintance with the metaphysics of mania, had taught me to put no faith in such evidence of sanity, and i continued to practice, throughout the interview, the caution with which i commenced it. which sentence would be the most concise wording for the selected sentence without changing its meaning? it is an excerpt from paragraph 7. a) i did not remark on anything, not even general topics, for fear of revealing my true purpose for being here. b) i limited my conversation to general things, like the weather, so as not to arouse or upset even a person with mental problems. c) i was not a very exciting conversationalist, so i kept my remarks to only general topics that she brought up, even crazy ideas. d) while it may have been more interesting to talk about more in-depth topics, i confined myself to discussing only that which or excites mentally unstable people.