For acceptable order questions, go through the rules and use them to eliminate answers one by one.
Note that I use the rules themselves. I don’t use my diagrams for these questions. Reading the rules again for this question will help you memorize them, and it’s also more efficient.
Rule 1 eliminates A. Ibanez must visit exactly two cities.
Rule 2 eliminates E. Fan and Haley cannot visit the same city as each other.
Rule 3 eliminates D. Manila is visited by Gleeson, so Tokyo must be visited by Haley.
Rule 4 eliminates B. Gleeson cannot visit Sydney.
C is CORRECT. It violates no rules.
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