Correct Answer: A

Rationale: You should redirect your dog's biting behavior when it bites something inappropriate. This can include redirecting its attention to an appropriate chew toy and using biting deterrent spray. The extract suggests that redirecting biting behavior is necessary when your dog bites something it shouldn't.

Correct Answer: C

Rationale: Male cicadas are known for making strident, high buzzing sounds by vibrating two membranes on their abdomen, reaching up to 80 to 100 decibels, similar to the roar of a loud engine. This behavior is distinct to male cicadas and serves as a way to attract females for mating. Choice A is incorrect because it describes physical characteristics of cicadas, not behavior. Choice B is incorrect as it describes the behavior of female cicadas, not males. Choice D is incorrect as it pertains to the behavior of female cicadas after mating, not males.

Correct Answer: B

Rationale: The correct answer is B. The US Navy preferred to utilize technology developed by military engineers rather than consider Lamarr's invention. Choice A is incorrect because Hollywood containing spies is not relevant to why the US was not interested in Lamarr's invention. Choice C is incorrect as there is no mention of the military being too preoccupied to consider new inventions in the provided context. Choice D is incorrect as there is no indication that the US suspected Lamarr's patent to be invalid; rather, the focus was on the navy's preference for technology developed by military engineers.

Correct Answer: D

Rationale: The correct statement about the passage is that beating egg whites involves stirring them vigorously. In the provided extract, it mentions 'Beat egg white until foamy. Stir in sugar, beat again until stiff peaks form.' This process of beating the egg whites until stiff peaks form requires vigorous stirring. Choice A is incorrect because the passage does not mention using a baking rack for cooking the cookies. Choice B is incorrect as the passage provides instructions for baking the cookies in an oven. Choice C is incorrect as the passage does not emphasize the need for gentle folding when mixing in the peanut butter.

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.