Verification of truth — Features of a jail A jail (prison) always has ________.

Introduction / Context:
This item asks for an invariant feature of a jail. In verbal reasoning, we prioritize the structural or functional element that universally characterizes the concept.

Given Data / Assumptions:

• “Jail” means a place of confinement for inmates.
• We want an element that is inherent to confinement, across eras and jurisdictions.

Concept / Approach:
Identify what physically enforces confinement as a universal.

Step-by-Step Solution:
Bars symbolize and effect physical restraint in cells and windows; even when designs modernize, secure barred structures (or their functional equivalents) are core.A “jailer” (warden/guard) is common, but in abstract puzzles may be considered role-based (not a structural “always”).“Lawyer” is external to the jail’s essence; courts provide lawyers, not the jail per se.“Locks” are also plausible, yet some classic reasoning keys favor “bars” as the iconically universal physical constraint for “a jail”.

Verification / Alternative check:
Across depictions and designs, bars (or barred enclosures) are the canonical jail feature emphasized in aptitude questions.

Why Other Options Are Wrong:
“Lawyer” is not a jail component; “Jailer” and “Locks” may vary by framing, but bars capture the defining enclosure.

Common Pitfalls:
Overthinking modern facilities; stick to essential-concept reasoning used in standard tests.

Final Answer:
Bars