Critical Reasoning: Dialog Format

Sports analyst: 90% of Country D's tennis professionals achieve positions in the international top ten, usually before reaching the age of 20. It must be that Country D's population has genetic characteristics that are suited to playing the sport of tennis.

Tennis coach: That's not true. Country D's success in tennis is not related to genetics, but to the skills and experience of its players.

Which of the following, if true, most strengthens the tennis coach's objection to the analyst's claim?

Incorrect.

[[snippet]]

This answer choice neither strengthens nor weakens the coach's objection. The fact that a player from Country B was last year's international winner does not influence our argument. The success of Country D as a tennis-playing country is not at question. The argument is about why Country D is so successful: is it genetics, or something else?

Incorrect.

[[snippet]]

This answer choice shows support for the analyst's claim and, therefore, weakens the coach's position. The phrase is born with is a clue that this statement is about genetics. However, we are supposed to be looking for a statement that undermines the link between Country D's success in tennis and genetics.

Incorrect.

[[snippet]]

This answer choice neither strengthens nor weakens the coach's objection. The fact that Country D only won Olympic medals for tennis does not influence our argument. The success of Country D as a tennis-playing country is not at question here. The argument is about why Country D is so successful: is it genetics, or something else?

Incorrect.

[[snippet]]

This answer choice neither strengthens nor weakens the coach's objection. Firstly,  we do not have enough information to know if 2% is a lot or a little. Secondly, the word accused means that it is possible that not even one player was actually found guilty of using illegal substances.Thirdly, the coach attributes the players' success to their skills, so introducing the drugs explanation does not support his case.

Very well done!

[[snippet]]

This answer choice supports the coach's objection. The fact that Country D's population is taught tennis for so many years while growing up is a logical reason for why they are so good at it. Therefore, by providing this alternative reason, this answer choice weakens the analyst's link to genetics.

The winner of last year's international tennis tour was a player from Country B.
The physique that a tennis player is born with is an extremely important factor that can affect that player's success as a professional.
In Country D's education, tennis is a compulsory activity that is taught to students through all twelve years of their formal education.
In the last Olympic Games, Country D did not win medals in any other discipline other than tennis.
Every year, 2% of Country D's tennis professionals are accused of using illegal substances to enhance their performance.

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