Blueberries have a higher vitamin C content than oranges. Additionally, since blackberries have more vitamin C than grapes, it can be concluded that blueberries have more vitamin C than grapes. If any of the following statements were added as premises, which one would NOT make the argument logically valid?

Answer Choices

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A. Blackberries have more vitamin C than blueberries.

Correct

B. Blueberries and blackberries have the same vitamin C content.

C. Oranges and blackberries have the same vitamin C content.

D. Oranges have more vitamin C than grapes.

E. Oranges have more vitamin C than blackberries.

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Explanation

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Official Explanation

Official

To analyze the argument, we start with the premises: Blueberries > Oranges and Blackberries > Grapes. From these, we conclude that Blueberries > Grapes. Now, we evaluate each option:

A. If Blackberries have more vitamin C than Blueberries, it contradicts our initial premise that Blueberries have more vitamin C than Oranges, making this statement valid.

B. If Blueberries and Blackberries have the same vitamin C content, it does not affect the conclusion that Blueberries > Grapes, so this statement is valid.

C. If Oranges and Blackberries have the same vitamin C content, it does not affect the conclusion, so this statement is valid.…

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Comments

ArkaFeb 5, 2025

can you explain more?

EzinneJan 29, 2025

cheers!

UmangFeb 1, 2025

cheers!

What this question tests

What it tests

Whether you can identify the option that most undermines an argument's conclusion.

Common trap

Choosing an irrelevant objection or one that attacks the premise rather than the reasoning.