Multiple choice general knowledge foreign languages sound (Noun) Gall Air Bladder of Fish Valley River Reveal answer Fill a bubble to check yourself B Correct answer Explanation In biology/fisheries, 'sound' refers to the air bladder or swim bladder of fish, which helps control buoyancy. 'Gall' means bold behavior. 'Valley' and 'River' are geographical features unrelated to the anatomical meaning in this context.