Statement–Assumption — “It is surprising that India beat Australia even after a follow-on; this is only the second time in the history of Test cricket.” Assumptions: I) Winning after enforcing/facing a follow-on is possible. II) India cannot repeat such a victory again. Choose the implicit assumption(s).

Introduction / Context:
A follow-on comeback is rare but has occurred. The statement notes surprise and cites rarity (“second time ever”).

Given Data / Assumptions:

• Outcome: India won despite follow-on.
• Rarity: event has precedent but is uncommon.

Concept / Approach:
The statement presupposes the logical possibility of such a win (Assumption I). It does not assert impossibility of repetition (Assumption II); rarity is not impossibility. Surprise and count (“second time”) support I, not II.

Step-by-Step Solution:

Verification / Alternative check:
Historical cricket records confirm the phenomenon can occur, albeit rarely.

Why Other Options Are Wrong:
Assumption II projects a sweeping claim not entailed by the text; “either/neither” overlook the minimal logical requirement.

Common Pitfalls:
Confusing rarity with impossibility or non-repeatability.

Final Answer:
Only Assumption I is implicit.