Difficulty: Medium

Average Score: 60%

Which of the following pieces of evidence does the author use to speculate why the Farallon Islands are called 'The Devil's Teeth'?

Rationale

The islands have sharks, choppy currents, and a jagged coastline.

The text suggests that the Farallon Islands possess hazardous conditions such as the presence of sharks, rough water currents, and a rugged shoreline. These harsh and dangerous factors might have led mariners to refer to these islands as 'The Devil's Teeth', symbolizing danger and difficulty.

A (The islands have sharks, choppy currents, and a jagged coastline.) CORRECT

This is the correct answer. The author uses these harsh and dangerous conditions present on the islands as evidence to speculate why the Farallon Islands might have earned the ominous nickname 'The Devil's Teeth'.

B (Swimming from San Francisco to the islands is very challenging.) YOUR ANSWER

While the challenge of swimming from San Francisco to the islands might indicate their dangerous nature, the text does not explicitly use this point as evidence to speculate why the islands are called 'The Devil's Teeth'.

C (In 1863, violence broke out on the islands during a historical event.) YOUR ANSWER

The text does not provide any evidence about a historical event in 1863 during which violence broke out on the islands. Therefore, this point cannot be used to speculate why the islands are referred to as 'The Devil's Teeth'.

D (They have always been called that by sailors who traveled past them.) YOUR ANSWER

The text does not mention that sailors have always referred to the Farallon Islands as 'The Devil's Teeth'. Therefore, this assertion cannot be used as evidence to speculate about the origin of the islands' nickname.

Conclusion

The author utilizes the dangerous conditions present on the Farallon Islands - the presence of sharks, choppy currents, and a jagged coastline - to speculate why they might have been labeled 'The Devil's Teeth'. The other options, including the challenge of swimming from San Francisco to the islands, a historical event marked by violence, or a long-standing nickname by sailors, are not provided as evidence by the author in the text.

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