OE
The shelling is building up to something like a peak, or crescendo (climax; loudest point). Pique (passing feeling of irritation at a perceived slight) sounds the same as peak, but is unrelated to the shelling. Euphony (pleasing sound) is positive, a meaning not indicated by this sentence. The pieces of artillery seem like they are sad, since that would be an apt response to a “pathetic sight.” Only woebegone—extremely sad or full of woe—fits; sidereal (relating to the stars or constellations) and erroneous (wrong) are unrelated. Their targets aren’t likely to be effulgent (radiant, brilliantly shining, or splendid) or ethereal (light, airy; heavenly, celestial) since neither of these is “pathetic.” The targets are most likely haggard—worn out.
Answer: B,E,I