Concept:The phrase “shed crocodile tears” means to show false or pretended sadness.Explanation:Paul shed crocodile tears when his friend failed the exam.This idiom describes someone who pretends to be sorry but does not truly feel the emotion.Therefore, Paul only acted as if he was sorry for his friend.He was not genuinely sorry, and he did not really cry from the heart.So the correct option is C.Answer:C. pretended he was sorry for his friend.