Statement — The local cultural club decided to organize a musical event to raise money for constructing its club building.\n\nAssumptions —\nI. Local residents may not allow the club to organize a musical event in the locality.\nII. The money raised through the musical event may be substantial enough to start construction.

Introduction / Context:
Fundraisers are planned on the belief that they will generate meaningful funds toward a stated objective. The decision to host a musical event presupposes expected adequacy of proceeds, not a presumption of community obstruction. If anything, the decision implicitly expects feasibility (permission/acceptance), not rejection.

Given Data / Assumptions:

• Action: organize a musical event.
• Goal: raise construction funds.
• I: residents may not allow the event (negative and counter to feasibility).
• II: proceeds will be substantial enough to initiate the project.

Concept / Approach:
Only the financial adequacy assumption is necessary. Assuming community denial would defeat the plan and is not required by the decision; rather, implicit feasibility (permission) is the minimal presupposition. Thus II alone is implicit.

Step-by-Step Solution:

Verification / Alternative check:
If the club expected denial, it would not plan an event as the fund-raising vehicle. Hence I is not implicit.

Why Other Options Are Wrong:

Common Pitfalls:
Reading in extraneous obstacles; the test asks for the minimal assumptions that make the decision rational.

Final Answer:
Only Assumption II is implicit.