Statement–Assumption (Ad Claim: “Use Nova cold cream for fair complexion”): Statement: “Use ‘Nova’ cold cream for fair complexion,” an advertisement. Assumptions: I) People like to use creams to attain a fair complexion. II) People are easily fooled. III) People respond to advertisements.

Introduction / Context:
Ads presuppose a relevant consumer desire and the effectiveness of promotional communication. We test which assumptions must hold for this ad to be sensible.

Given Data / Assumptions:

• Product: cold cream; promised outcome: fair complexion.
• Target behaviour: adoption due to ad.

Concept / Approach:
For the ad to work, (a) people should care about fairness and be willing to try creams toward that end, and (b) they should be at least somewhat influenced by advertisements. Beliefs about gullibility are not necessary; persuasion is compatible with rational choice if claims appear credible.

Step-by-Step Solution:
I: If people do not desire a fair complexion or do not use creams for it, the ad misses relevance. So I is implicit.II: “Easily fooled” is a cynical overreach; effective ads can inform or remind rather than dupe. Not necessary—II is not implicit.III: Advertisers assume ads can move awareness or intent; otherwise, advertising spend would be pointless. III is implicit.

Verification / Alternative check:
Marketing models (AIDA/awareness–consideration–purchase) assume some responsiveness, not gullibility.

Why Other Options Are Wrong:
Pairs including II mischaracterise the premise; singletons omit another necessary assumption.

Common Pitfalls:
Conflating “ad effectiveness” with “people are gullible.”

Final Answer:
I and III are implicit.