Critical Reasoning — Implicit Assumptions Plan: “Pramod decided in May to get railway reservations for a July journey to Madras.”

Difficulty: Easy

Correct Answer: Only I and III are implicit

Explanation:

Introduction / Context:The action is to book in May for a July trip. We identify which background beliefs must hold for this plan to be sensible.

Given Data / Assumptions:

  • I. Railways issue reservations two months in advance.
  • II. There is more than one train to Madras.
  • III. There will be vacancy in the desired class.

Concept / Approach:Advance booking implies (a) such booking is allowed around that time horizon and (b) a reasonable chance of getting a seat in the intended class. The number of trains is not crucial.

Step-by-Step Solution:

1) I is necessary: if reservations are not opened two months early, booking in May for July would not be possible.2) II is unnecessary: even a single train could be the target of the reservation.3) III is necessary in a practical sense: deciding to book assumes some availability; otherwise the plan would be futile.

Verification / Alternative check:Negate I or III: the plan loses feasibility. Negate II: the plan still works with one train.

Why Other Options Are Wrong:

  • II and III / All: these add a non-essential multiplicity of trains.

Common Pitfalls:Confusing “decision to book” with “guaranteed confirmation.” The assumption is about reasonable possibility, not certainty.

Final Answer:Only I and III are implicit

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