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: B

Rationale: The word 'shocked' has a negative connotation as it implies a strong feeling of surprise or dismay. In the context of the provided extract, the word 'shocked' would be fitting to describe the reaction of individuals witnessing the sudden outbreak of violence during the skirmish at Lexington and Concord. The other choices do not carry a negative connotation in this context: 'Contained' is neutral, 'Complimentary' is positive, and 'Reportedly' is neutral.

Correct Answer: A

Rationale: The examples of plastic's advantages and difficulties in recycling show why the topic is divisive. The passage mentions that plastic has advantages, but it is difficult to recycle efficiently, indicating a conflict between the benefits and environmental impact of plastics. This conflict contributes to the divisive nature of discussions surrounding the use of plastics. Choices B, C, and D do not provide contrasting examples that highlight the divisive nature of the topic.

Correct Answer: A

Rationale: The author highlights the significance of the contributions made by lesser-known inventors like Lamarr and Antheil.

Correct Answer: A

Rationale: The word 'avian' refers to birds, so the synonym is 'Bird.' In the provided passage, the term 'avian' is used to refer to birds, making 'Bird' the correct synonym. 'Flying' and 'Aerial' are related to the concept of flight but do not specifically refer to birds. 'Plane' refers to an aircraft and is not synonymous with 'avian' or 'bird.' Therefore, 'Bird' is the most appropriate choice as a synonym for avian in this context.