I reined my horse to the precipitous brink of a black and lurid tarn that lay in the unruffled lustre by the dwelling, and gazed down -- but with a shudder even more thrilling than before -- upon the remodelled and inverted images of the gray sedge.
Answer
I
It describes what the narrator knows from his past.
I
It describes what the narrator experiences in the story.
I
It provides an inference drawn by the narrator.
I
It provides a criticism voiced by the narrator.
Explanation
The sentence describes the narrator’s immediate actions and sensations: he reins in his horse, gazes into the tarn, and shudders at what he sees. That makes it an experience occurring in the story, rather than knowledge from his past or a criticism.
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