The word ”cursory” means hasty and therefore not thorough or detailed, which fits perfectly in the context of skimming a book quickly. Thus, the correct answer is option 1.
• cursory (1): This is correct; it conveys the idea of quick and superficial reading.
• cryptic (2): This is incorrect; it means having a meaning that is mysterious or obscure.
• morose (3): This is incorrect; it means sullen and ill-tempered.
• munificent (4): This is incorrect; it means more generous than is usual or necessary.