Correct Answer: D

Rationale: A compound-complex sentence consists of at least two independent clauses and at least one dependent clause. In option D, 'He enjoyed reading the book' is an independent clause, while 'because it was suspenseful' is a dependent clause, making it a compound-complex sentence. Choices A, B, and C do not meet the criteria for a compound-complex sentence as they either lack the required combination of independent and dependent clauses or do not contain multiple independent clauses.

Correct Answer: C

Rationale: The word 'unscathed' means without harm or damage. The word 'scratch' shares the same root related to physical marks or damage, making it the correct choice. 'Category' and 'scar' do not have the same root as 'unscathed' and are not related to the concept of being unharmed, making them incorrect choices.

Correct Answer: C

Rationale: The main function of transition words and phrases in writing is to connect ideas smoothly and guide the reader's flow. They serve to establish logical relationships between different parts of the text, ensuring coherence and facilitating a clear progression of thoughts. Choice A is incorrect as transition words are meant to enhance clarity and coherence, not add unnecessary embellishments. Choice B is incorrect because while transition words can provide emphasis, their primary role is in facilitating the flow of ideas. Choice D is also incorrect as introducing opposing viewpoints and counterarguments is typically done through different means such as specific phrases or signal words.

Correct Answer: A

Rationale: The correct answer is 'A: herself.' A reflexive pronoun refers back to the subject of the sentence and emphasizes that the subject performed the action on itself. In the sentence 'She prepared herself for the presentation,' 'herself' refers back to the subject 'she,' making it a reflexive pronoun. Choice B, 'she,' is a subjective pronoun used as the subject of the sentence. Choice C, 'presentation,' is a noun and not a pronoun. Choice D, 'for,' is a preposition and not a pronoun.

Correct Answer: B

Rationale: The past tense of the verb 'discover' is 'discovered.' In this case, the scientist already found a new species of butterfly, indicating a past action. 'Discovered' is the correct past tense form of 'discover.' The other options do not represent the past tense form of the verb. 'Discovers' is present tense, 'discovering' is present participle, and 'discovery' is a noun, not a verb tense.