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Difficulty: HardMust Be True / Most Strongly Supported

Under the Northern Abyssal Maritime Protocol, every deep-sea exploration vessel operating in the Northern Abyssal Zone that is equipped with autonomous acoustic mapping sensors is required to carry a dual-redundant power core. No vessel carrying a dual-redundant power core is permitted to enter the benthic sanctuary unless it has received benthic environmental clearance. Furthermore, every vessel that has received benthic environmental clearance has completed a closed-loop coolant inspection. The research vessel Vanguard operates in the Northern Abyssal Zone and is equipped with autonomous acoustic mapping sensors, but it has not completed a closed-loop coolant inspection.

Based on the information above, which of the following statements must be true? (Select all that apply)

  1. The Vanguard carries a dual-redundant power core.Answer
  2. The Vanguard is not permitted to enter the benthic sanctuary.Answer
  3. C
    Any vessel operating in the Northern Abyssal Zone that has received benthic environmental clearance is equipped with autonomous acoustic mapping sensors.
  4. D
    Every vessel that has completed a closed-loop coolant inspection is permitted to enter the benthic sanctuary.
  5. E
    No vessel operating in the Northern Abyssal Zone is capable of completing a closed-loop coolant inspection.

Answer

The statements indicating that the Vanguard carries a dual-redundant power core and that the Vanguard is not permitted to enter the benthic sanctuary must both be true.
The premises establish two deductive chains: first, the Vanguard's location and equipment satisfy the sufficient condition requiring a dual-redundant power core; second, by contrapositive, the absence of a coolant inspection proves the Vanguard lacks environmental clearance, which in turn bars any vessel with a dual-redundant power core from entering the sanctuary.

Step-by-Step Solution

1
Deduce the power core status of the Vanguard from the first rule.
The Vanguard is established to carry a dual-redundant power core.
The stimulus specifies that any vessel in the Northern Abyssal Zone equipped with acoustic mapping sensors must carry a dual-redundant power core, and the Vanguard satisfies both trigger conditions.
2
Apply the contrapositive to the coolant inspection rule.
The Vanguard has not received benthic environmental clearance.
Since benthic environmental clearance requires completing a closed-loop coolant inspection, failing to complete the inspection guarantees that clearance was not received.
3
Evaluate the entry restriction for the benthic sanctuary.
The Vanguard is prohibited from entering the benthic sanctuary.
Any vessel with a dual-redundant power core cannot enter without clearance; having established that the Vanguard has the core and lacks clearance, it cannot enter.

Key Concept

Deductive Conditional Chaining and Contrapositive Inference
Estimated Time:2m 0s
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