Passage Summary: Toddlers usually have a sweet tooth, but if you spend a year feeding them salty snacks, they'll start picking the salt over the sugar; this suggests their environment shapes their palate.

Conclusion: A young child's taste preferences can be influenced by the food they are exposed to.

Reasoning: One-year-olds usually prefer sweet food, but if they are fed salty food for a year, they will eventually develop a preference for salty food.

Analysis: The argument relies on the assumption that the change in the child's preference was caused by the exposure to salty food rather than a natural shift in taste that occurs as children age. If children naturally grow to prefer salty food by age two regardless of their diet, the evidence doesn't support the conclusion. Look for an answer that rules out this alternative explanation of natural development.