Correct Answer: A

Rationale: The main idea of the paragraph is to highlight the dangers associated with coal mining. The sentence 'Coal miners risk injury and health issues on a daily basis' supports the concept that coal mining is a dangerous job. Choice B is incorrect as it focuses on cleanliness rather than safety. Choice C is incorrect as the location of coal mining is not the primary focus of the paragraph. Choice D is incorrect as it does not encompass the full extent of risks mentioned in the paragraph.

Correct Answer: A

Rationale: The correct answer is A: 'Let me know.' This is a complete sentence as it contains a subject ('me') and a verb ('know'). Choice B, 'On the subject of philosophy,' is a prepositional phrase and does not form a complete sentence as it lacks a subject and verb. Choice C, 'Depending on the type of books you like,' is a dependent clause and does not stand alone as a complete sentence. Choice D, 'Where there are lots of people,' is a dependent clause as it begins with a subordinating conjunction ('where') and does not function as a complete sentence on its own.

Correct Answer: A

Rationale: The correct answer is 'Peer-reviewed articles.' Peer-reviewed articles are considered highly reliable because they undergo a rigorous evaluation process by experts in the field before publication. This process ensures that the research presented is of high quality and meets academic standards. Choice B, 'Wikipedia,' is not considered a reliable source for scholarly research as it can be edited by anyone, leading to potential inaccuracies. Choice C, 'Opinion articles from a newspaper,' may provide perspectives but may not always be based on rigorous research or evidence. Choice D, 'Blogs and other social media,' lack the rigorous review process that peer-reviewed articles undergo, making them less reliable for scholarly research.

Correct Answer: A

Rationale: The correct answer is 'chiefs.' 'Chief' follows the standard rule for forming the plural by adding an 's' at the end. Choices B, C, and D are incorrect as they do not follow the standard pluralization rule for the word 'chief.' 'Chieves,' 'chievs,' and 'chiefes' are not valid plural forms of 'chief.'

Correct Answer: A

Rationale: The correct answer is A: 'To go around.' Circumvent means to find a way around an obstacle or to avoid something by cleverness or deception. Choice B, 'To go under,' is incorrect as circumvent does not involve going under something. Choice C, 'To come near,' is incorrect as circumvent does not mean to approach or get close to something. Choice D, 'To come through,' is incorrect as circumvent does not involve passing through something.