It's D some 4,000 doesnt denote a finite number ...it is uncountable => so it is an amount ... A, B out In OG10-39. Most archaeologists have held that people first reached the Americas less than 20,000 years ago by crossing a land bridge into North America..... => so "less than one quarter of some 4000 drive-ins" is a correct usage (Besides, "a number is less than or equal to X" NOT "a number is fewer than or equal to X") Left with CDE : C fewer than... amount => wrong ; E it => referent is unclear Answer is definitely D |