Question

read the excerpt from \the adventure of the mysterious picture.\ \there is a secret about one of my rooms on which i feel disposed to try an experiment. so, gentlemen, none of you shall know who has the haunted chamber, until circumstances reveal it. i will not even know it myself, but will leave it to chance and the allotment of the housekeeper. at the same time, if it will be any satisfaction to you, i will observe, for the honor of my paternal mansion, that theres scarcely a chamber in it but is well worthy of being haunted.\ what technique does irving use to build suspense in the excerpt? the pace of the story quickens. setting details are intentionally omitted. odd characters are introduced. the word choice darkens the tone.

Explanation:

The passage doesn't show a quickening pace, introduce odd - characters, or have setting details omitted. Words like "secret", "haunted", and "scarce" darken the tone and build suspense.

Answer:

The word choice darkens the tone.