Statement — “Be humble even after gaining victory.”\n\nAssumptions —\nI. Many people are already humble after winning.\nII. Generally, people are not humble after winning (hence the advice is needed).

Introduction / Context:
Prescriptive advice typically arises to correct a common tendency. Advising winners to remain humble presupposes that post-victory arrogance is common enough to warrant guidance.

Given Data / Assumptions:

• Advice: maintain humility after success.
• I: many already are humble (makes advice redundant; not needed).
• II: people tend not to be humble after victory (explains why advice is useful).

Concept / Approach:
The rationale for an advisory statement is to address a perceived deficit. Hence II, not I, is presupposed.

Step-by-Step Solution:

Verification / Alternative check:
If most people were already humble, the need for such advice would be minimal; thus I is not necessary.

Why Other Options Are Wrong:

Common Pitfalls:
Reading the advice as a mere slogan; in logic tests, infer the minimal condition that makes the advice sensible.

Final Answer:
Only Assumption II is implicit.