<span>A certain cool-headedness had come to him; it was not the first time he had been in a tight place.
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Rainsford remembered the shots. They had come from the right, and doggedly he swam in that direction, swimming with slow, deliberate strokes, conserving his strength.
Those are the obvious two.
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I'd say d is the answer. By chemical attack, it is specifically a gas attack. Gas masks, all buy one is able to put on their gas masks. Presumably that one guy died. B is definitely incorrect.
Answer:its b
Explanation:
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