Statement–Assumption — “Nobody can predict how long our country will take to contain disastrous terrorist activities.” Assumptions: I. It is impossible to end terrorist activities. II. Efforts to control or contain terrorist activities are in progress.

Introduction / Context:
The statement is about uncertainty over the timeframe for containment, not about impossibility of success.

Given Data / Assumptions:

• Containment is a policy goal under active consideration.
• Efforts (operations, policies, negotiations) are being made or expected soon.

Concept / Approach:
To talk meaningfully about “how long” implies a process underway or contemplated. It does not assume impossibility; it highlights unpredictability.

Step-by-Step Solution:
1) Assumption I (impossible to end) is stronger than needed and contradicts the notion of measuring time to contain.2) Assumption II (efforts are on) is necessary; otherwise, asking “how long” would be misplaced.

Verification / Alternative check:
Project planning often discusses timelines precisely when work is ongoing but uncertain.

Why Other Options Are Wrong:
I-only/Either/Both/Neither either import fatalism or deny the ongoing process premise.

Common Pitfalls:
Confusing “cannot predict” with “cannot achieve.”

Final Answer:
if only assumption II is implicit.