Correct Answer: D

Rationale: The phrase 'a bold new world' is a metaphor. Metaphors make direct comparisons between two unlike things without using 'like' or 'as.' In this case, 'a bold new world' is not meant to be taken literally but is used to convey the idea of a fresh, innovative, and adventurous situation. It goes beyond a mere exaggeration (hyperbole), a contradictory phrase (oxymoron), or a comparison using 'like' or 'as' (simile), making 'metaphor' the correct choice in this context.

Correct Answer: C

Rationale: Option C correctly uses the phrase 'by the way' to introduce additional information that is not directly related to the previous sentence, making it a natural and appropriate use of the phrase in casual conversation. Choices A, B, and D do not use 'by the way' in the same context as option C. Choice A incorrectly uses 'by the way' to convey winning the lottery, which is not a casual or incidental piece of information. Choice B incorrectly uses 'by the way' after a semicolon in a way that disrupts the flow of the sentence. Choice D correctly uses 'by the way' but the information provided about the movie starting time is not a casual or incidental addition, unlike in option C.

Correct Answer: A

Rationale: The word 'thunderous' is the most suitable choice in this context. It accurately conveys the idea of loud, intense, and enthusiastic applause, which aligns with the significance of the breakthrough mentioned in the sentence. 'Scattered,' 'polite,' and 'hesitant' do not adequately capture the level of excitement and appreciation conveyed by the word 'thunderous' in the context of a significant scientific breakthrough.

Correct Answer: B

Rationale: Option B correctly uses a semicolon to join two independent clauses related to the same event. In this sentence, 'The guests arrived' and 'Sarah greeted them at the door' are both independent clauses that are appropriately connected using a semicolon. Choice A incorrectly uses a semicolon before 'however,' which is a conjunction that should be preceded by a comma. Choice C incorrectly uses a semicolon to connect two independent clauses that are not closely related. Choice D incorrectly uses a semicolon to connect two independent clauses without a clear relationship or cohesion.

Correct Answer: C

Rationale: The sentence 'Wow, what a beautiful sunset!' expresses strong emotion ('Wow') and conveys an exclamation, indicating that it is an exclamatory sentence. Exclamatory sentences are used to show strong feelings or emotions and typically end with an exclamation mark. Choice A, 'Interrogative sentence,' is incorrect because interrogative sentences ask questions, which this sentence does not. Choice B, 'Declarative sentence,' is incorrect because declarative sentences make statements or convey information, which is not the case here. Choice D, 'Imperative sentence,' is incorrect because imperative sentences give commands or instructions, which are not present in the given sentence.