Me on this question i will make you brainliest. the rise of the isle of the lost what did uma learn from cook that would uma find the trident? a. professor yen sid had the pieces of ursula's seashell necklace. b. flotsam and jetsam had seen it wound up in a fisherman's net. c. harry had intercepted a message from mal to ben that talked about a relic. d. she had found a mysterious map in the galley of the lost revenge.