Difficulty: Easy
Correct Answer: Only assumption I is implicit.
Explanation:
Introduction / Context:
A public advisory aims to correct a mistaken heuristic (thickness equals quality). We assess which beliefs are necessary for issuing such guidance.
Given Data / Assumptions:
Concept / Approach:
I must be true; without a misconception there is no reason to issue the message. II, alleging competitors’ adulteration, is not necessary; the advisory can stand purely as consumer education without accusing others.
Step-by-Step Solution:
Verification / Alternative check:
Milk thickness can be influenced by fat/SNF content or additives; quality requires standardized testing.
Why Other Options Are Wrong:
“Only II/Both/Neither” either add needless accusation or miss the educational premise.
Common Pitfalls:
Assuming all thick milk is adulterated; the message only rejects “thickness = quality.”
Final Answer:
Only assumption I is implicit.
Discussion & Comments