Statement — Nobody advises motorcyclists and pillion-riders in Britain, Holland, Italy and other countries to wear helmets; it is considered sheer common sense and elementary prudence.\n\nConclusions —\nI. The citizens of Britain, Holland and Italy are literate.\nII. The citizens of Britain, Holland and Italy are conscious regarding their safety.

Introduction / Context:
The statement indicates that wearing helmets is treated as obvious common sense in certain countries; no one needs to “advise” riders. We must test which conclusion logically follows strictly from the statement, without importing external facts.

Given Data / Assumptions:

• No explicit mention of literacy levels.
• Implied norm: people recognize the safety value of helmets without reminders.
• We are not told about laws, campaigns, or schooling; only the norm of behavior/common sense is stated.

Concept / Approach:
Conclusions must be necessary inferences. Linking “common sense” about helmets directly supports safety consciousness, not literacy. Literacy could correlate with many outcomes, but it is not entailed by the statement.

Step-by-Step Solution:

Verification / Alternative check:
Replace “common sense” with “widely internalized safety norm.” This still guarantees safety consciousness, but says nothing about reading/writing proficiency.

Why Other Options Are Wrong:

Common Pitfalls:
Equating civilized safety norms with literacy; they are distinct constructs.

Final Answer:
Only conclusion II follows.