Q24 - One-year olds ordinarily prefer

[siliconrs]

I get why A is right and how to negate it. C is oddly worded and hard to understand much less negate.

Does C negate to this?
Two year olds do naturally dislike salty food so much that they would not choose it over some other food.

Also if the text from answer C is reworded to positive language, is this correct:
Negated: Two year olds do naturally like salty food so much that they would choose it over some other food.

[maryadkins]

We are looking for a necessary assumption.

feed a one-year-old salty food for a year and after a year he'll choose salty over sweet

-->

young child's preferences are affected by food exposed to

An assumption is that the feeding him the salty food is what is leading to the change. (Maybe at two years old all kids start liking salty food.) (A) states this assumption. If we negate (A) (Two-year-olds naturally prefer salty food to sweet food), the argument is destroyed.

(B) doesn't have to be true for the argument to work.
(C) offers us an assumption that, when we negate it, strengthens the argument. To negate it, just take out the "do not." If two-year-olds naturally dislike salty food (and I wouldn't even worry about the rest), then the fact that they're choosing it must mean something has caused that effect.
(D) is irrelevant. Who cares how it tastes?
(E) is likewise irrelevant.

As to your second question below, sure. And you see that it's the opposite of what we want if two-year-olds naturally like the salty food.

[SJK493]

(C) offers us an assumption that, when we negate it, strengthens the argument. To negate it, just take out the "do not." If two-year-olds naturally dislike salty food (and I wouldn't even worry about the rest), then the fact that they're choosing it must mean something has caused that effect.

Can I ask for clarification on how answer (C) strengthens the argument? I thought this was just the opposite of the correct answer.

[zhengz67]

I chose B instead of A. Cause the question stim mention they feed the 1 yr baby salty food for over a year, so it prefers salty food. So this means the taste preference should be able to change between 1 yr old to 2 yr old. If taste prefer is not able to change, isn't that also mean the experiment conclusion wrong?