What is the source? We can't infer any of the answer choices, because for all we know, the airline offered optional etiquette and hospitality programs in the 1980s, and this airline steward took them both back then and has been with the airline for 50 years.
The logic of the question is backwards. If we know answer E is true, we can infer the steward attended both the etiquette and hospitality programs. If we know a steward attended both programs, we can't infer anything about when the steward
...
The logic of the question is backwards. If we know answer E is true, we can infer the steward attended both the etiquette and hospitality programs. If we know a steward attended both programs, we can't infer anything about when the steward
...
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