Critical Reasoning — Implicit Assumptions Advertisement: “X air-conditioner — the largest selling name with the largest range.” Assumptions to test: I. X air-conditioner is the only brand with wide variations. II. There is demand for air-conditioners in the market.

Introduction / Context:
The ad positions brand X as top-selling and broadest in range. We must identify the minimal assumptions needed for such messaging to make sense.

Given Data / Assumptions:

• Claimed attributes: largest selling, largest range.
• Assumption I: X is the only brand offering wide variations (exclusivity).
• Assumption II: there exists demand for air-conditioners.

Concept / Approach:
Advertisements presume a market that wants the product; otherwise the pitch would be pointless. However, saying “largest range” does not imply exclusivity—others may also have wide ranges, just not as large.

Step-by-Step Solution:

Verification / Alternative check:
Negate II: no demand—ad is futile. Negate I: competitors have wide ranges too—claim of “largest” can still stand.

Why Other Options Are Wrong:

• I only / Either / Neither / Both—each misreads comparative language as exclusivity or ignores basic market presuppositions.

Common Pitfalls:
Confusing “superlative” with “only.” Superlative is comparative, not exclusive.

Final Answer:
Only assumption II is implicit