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Show answer & explanation
The sequence 'Team B, Team A, Team C, Team D' satisfies all constraints: Team A is not in the first or last slot, and Team D presents after Team B.
Step-by-step Derivation:
Step 1: Identify the constraints provided in the problem description.
Constraint 1: Team A cannot be in the first slot (Slot 1) or the last slot (Slot 4).
Constraint 2: Team D must present in a slot after Team B (B < D).
Step 2: Evaluate the provided sequences against these constraints.
- Sequence 1: 'Team B, Team D, ...' (Incomplete/Invalid format in image).
- Sequence 2: 'Team A, Team C, Team B, Team D' -> Fails Constraint 1 (Team A is in the first slot).
- Sequence 3: 'Team D, Team B, Team C' (Incomplete/Invalid format).
- Sequence 4: 'Team B, Team A, Team C, Team D' ->
- Slot 1: Team B (Valid)
- Slot 2: Team A (Valid, not first or last)
- Slot 3: Team C (Valid)
- Slot 4: Team D (Valid, not Team A)
- Order: Team B is in Slot 1, Team D is in Slot 4. Since 1 < 4, Team D is after Team B (Valid).
Step 3: Conclusion. The sequence 'Team B, Team A, Team C, Team D' is the only valid sequence among the choices.