For an inference question, identify the precise relationship among the passage’s facts rather than selecting a merely related claim. Here, analyze the evidence in both directions: whether every advertised event occurred and whether actual events were usually advertised. Then reject options that make unsupported claims about missing records, relative frequencies, or the equivalence of different sources.
Hints
- Hint 1
Identify each source’s function
Ask what advertisements record directly and what account books record directly.
- Hint 2
Consider both directions
Compare the proportion of advertised events that occurred with the proportion of actual events that had been advertised.
- Hint 3
Avoid unsupported assumptions
The passage does not establish that cancellation rates were consistent across plays or that missing records explain known cancellations.
Step-by-step
- Step 1
Distinguish intentions from outcomes
Advertisements show what companies intended to perform. Account books, by contrast, document performances that actually occurred.
- Step 2
Interpret both findings
Because about one-fifth of advertised performances were canceled, an advertisement does not confirm an actual performance. However, because nearly every documented performance had been advertised, performances without advertisements were uncommon.
- Step 3
Complete the inference
Therefore, choice D is correct: an advertisement is stronger evidence that a performance was planned than that it occurred, while a lack of advertisement makes occurrence comparatively unlikely.