If T goes fourth then both Z and W must go before T. We don’t know where Z has to go apart from that.
V must go fifth because V goes after T and because S, Y and Q all go after V.
The diagram below indicates that Z, R — T and W comes before T. The commas show that they could be in any order (as long as R is before T).
A could be true but it doesn’t have to be. R could go first and Z could go second or third.
B could be true but it doesn’t have to be. Z could go first, or third.
C could be true, but it doesn’t have to be. W could go second instead, and Z could go third.
D must be true. T goes, V goes after T and before S, Y and Q. There’s only room to place V in fifth. D is CORRECT.
E could be true, but doesn’t have to be. Y could also go sixth, if both S and Q went after Y.
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