Statements:\nI. The principal will address the students at 10:00 a.m.\nII. You are requested to take your seats before 10:00 a.m.\nAssumptions:\nI. If a student is not seated before 10:00 a.m., the function cannot start.\nII. The function will start as scheduled.

Introduction / Context:
The pair of statements is a typical announcements-and-assumptions item. The first announces a scheduled address at 10:00 a.m.; the second requests the audience to be seated beforehand. We must detect what is tacitly presumed to make this communication sensible.

Given Data / Assumptions:

• A formal function (address) is scheduled for 10:00 a.m.
• Organizers want students seated before it begins.
• No explicit necessity condition is stated about seating for commencement.

Concept / Approach:
An assumption is implicit if the statements’ purpose would be undermined without it. Requesting “take seats before 10” supports timely commencement; it relies on the plan that the function will indeed start at the scheduled time. It does not require the stronger claim that the function cannot start unless every student is seated before 10.

Step-by-Step Solution:
1) Assumption I posits a strict necessity: no start if any student is late. The request does not entail this strict condition; it merely seeks order and punctuality → not implicit.2) Assumption II—that the function will start as scheduled—is natural and necessary for the timing request to have force → implicit.

Verification / Alternative check:
Even if some students are slightly late, the function might still begin. Hence I is too strong, while II is the minimal presupposition.

Why Other Options Are Wrong:
“Both” wrongly imports a necessity condition; “Neither” ignores the scheduling presupposition; “I only” is too strong.

Common Pitfalls:
Confusing “requested for orderliness” with “strict prerequisite.”

Final Answer:
Assumption II is implicit.