Correct Answer: A

Rationale: News articles and textbooks would provide the most relevant historical data on economic trade during World War 1. During significant events like World War 1, news articles would have reported on the economic aspects, such as trade disruptions and policies. Textbooks that cover the period would also delve into the economic impacts of the war. Choices B, C, and D are incorrect because social media, photographs, atlases, works of art, almanacs, and music are less likely to contain specific information about economic trade during World War 1. Social media did not exist during that time, photographs, atlases, works of art, almanacs, and music are more focused on visual, geographical, artistic, or general historical aspects rather than detailed economic data.

Correct Answer: A

Rationale: Choice A provides a comprehensive list of key points from the passage about Dr. Creekstone's 90th birthday party, including the number of guests, unique elements like zebras and monster trucks, the buffet contents, and the fireworks display. Choices B and C do not cover all the important details mentioned in the passage, making them incomplete and inaccurate. Choice D is a partial summary, missing essential details such as the unique elements and the limited buffet, so it is not the best option.

Correct Answer: B

Rationale: The correct answer is B because the evidence from the 2008 study mentioned in the passage supports the inference that napping for 60 minutes can improve verbal memory, motor skills, and perceptual learning better than caffeine. This indicates that providing nap rooms at work can lead to improved productivity by enhancing cognitive functions. Choice A talks about the fatigue reported by employees but does not directly link it to productivity improvement. Choice C mentions that many successful companies have adopted the practice of work naps but does not specifically tie it to productivity enhancement. Choice D states the intention to provide nap rooms for employees but does not provide direct evidence of productivity improvement.

Correct Answer: A

Rationale: The correct answer is A: 'Witty.' The tone of the passage is light-hearted and humorous, characterized by amusing details like the eccentric birthday party with zebras, monster trucks, and a limited buffet of boiled asparagus and pickled carrots. The mention of Dr. Creekstone planning an even bigger party with more zebras adds to the whimsical and humorous tone. Choices B, C, and D are incorrect as there is no indication of disbelief, hostility, or anxiety in the passage; instead, it conveys a sense of fun and amusement.

Correct Answer: A

Rationale: The correct conclusion that can be drawn from the passage is that plastic pollution poses a significant environmental threat due to its lasting nature and difficulty in recycling. The passage highlights the challenges of recycling plastic due to its low quality when recycled, leading to pollution and environmental hazards. It mentions the presence of a large island of plastic in the Pacific Ocean, showing the severe impact of plastic pollution on the environment. Therefore, choice A is the most accurate conclusion. Choice B is incorrect as the passage mentions that plastic has many advantages despite its recycling challenges. Choice C is incorrect as the passage indicates that recycling plastic is difficult due to its low quality when recycled. Choice D is incorrect as the passage clearly states that plastic consumption by marine life like fish and birds is a reality, showing the impact of plastic pollution on marine ecosystems.