Task instructions
Choose the best answer. For sentence equivalence in full practice, select two choices only when instructed.
Because reliable records were ____, the estimate carried substantial uncertainty.
A. scarce
B. abundant
C. conclusive
D. exhaustive
Practice workspace
Write notes or your response
02:00
Reveal answer key / expected response
A — scarce
Suggested approach
Identify the tested relationship; eliminate choices that are grammatically or logically incompatible; verify the sentence or passage as a whole.
Official-style scoring criteria
Correct interpretation, vocabulary, and reasoning.