Correct Answer: D

Rationale: In the United States, drivers drive on the 'right' side of the road. This is the standard practice in the country. Choice A 'Rite' is incorrect as it is a misspelling of 'Right.' Choice B 'Left' is incorrect as driving on the left side is common in countries like the UK, not the US. Choice C 'Off-side' is incorrect as it is not a standard term used to describe the side of the road where people drive in the US.

Correct Answer: A

Rationale: The correct answer is A: 'Confinement away from the general population.' Quarantine refers to keeping someone isolated from the general population to prevent the spread of disease. Choice B, 'A specialist's care,' is incorrect as it refers to medical treatment by a specialist, not isolation. Choice C, 'Experimental drug therapy,' is incorrect as it involves the administration of new drugs for research purposes, not isolation. Choice D, 'Imprisonment in a rehabilitation unit,' is incorrect as it implies being detained in a rehabilitation facility, not isolation for health reasons.

Correct Answer: B

Rationale: The correct answer is B: 'Destructive.' 'Pernicious' is used to describe something having a harmful effect, especially in a gradual or subtle way. The other choices are incorrect because 'Valued' means considered important or cherished, 'Finicky' means overly particular or fussy, and 'Perpetual' means continuing indefinitely or recurring.

Correct Answer: B

Rationale: The correct answer is 'B: Residual.' In the given sentence, 'residual' is used to describe something that is left or remaining. 'Residual' fits the context perfectly as it aligns with the definition of what remains. The other choices are incorrect: A) 'Resident' refers to a person living in a specific place, C) 'Resistance' is the act of opposing or withstanding something, and D) 'Resin' is a sticky substance produced by plants.

Correct Answer: C

Rationale: The term 'flexible' accurately describes the type of tube used in the given context. A 'solid' tube would not have been suitable for navigating a curved pipe as it is not pliable. 'Rigid' implies stiffness and inflexibility, making it unsuitable for the task. 'Perforated' means pierced with holes, which is unrelated to the plumber's task of opening up a curved pipe.