provenanceHow this bank was made: every item was AI-generated, then passed a multi-pass adversarial audit (set-level distinctness, per-question defensibility, quote verification) with human review owning the final bar.
How to use this page: read the passage, commit an answer (A–D or click), rate how sure you are, and feedback arrives in tiers: verdict, brief rationale, and a deep dive when you want it. Flag anything to revisit. Finish with Review & score for your results and calibration readout. Toggle Design notes ⓘ to see why each choice is built the way it is.