This question says S is earlier than Q. You should check what scenarios this is possible in. Scenarios 1, 2 and 3 allow S to be earlier than Q:
Scenario 1
Scenario 2
Scenario 3
This question says S is before Q. So really the three scenarios look like this:
Scenario 1
Scenario 2
Scenario 3
Now you’re looking for what must be true in all scenarios. Let’s eliminate answers.
Scenario 2 disproves A. Q isn’t fourth in that scenario.
Scenario 1 disproves B. R is not second in that scenario.
Scenario 1 disproves C. S is not first in that scenario.
D is CORRECT. T must be last in all three scenarios.
Scenario 2 disproves E. V is fourth in that scenario.
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