6. Many casualties were caused by the flood. People had not been warned of the danger until disaster was
_______.
(A) pertinent (B) improvident (C) imminent (D) insolent
(A) pertinent-directly relate to the subject (B) improvident= spendthrift; not planning carefully for the future esp. by spending money in an unwise way (C) imminent-like to happen soon (D) insolent-rude, not showing respect