Correct Answer: B

Rationale: A complex sentence consists of one independent clause and at least one dependent clause. In sentence B, 'Because my tea was cold' is the dependent clause, indicating that it cannot stand alone as a complete sentence. Choices A, C, and D do not contain a dependent clause along with an independent clause, making them incorrect. Choice A is a compound sentence with two independent clauses joined by a coordinating conjunction. Choice C is a compound sentence with a series of independent clauses, but lacks a dependent clause. Choice D is a compound-complex sentence with two independent clauses and a dependent clause.

Correct Answer: A

Rationale: The correct answer is A: 'caffeine.' The word 'caffeine' is spelled with only one 'e' after the 'f,' not 'caffiene.' 'Truly,' 'neither,' and 'exactly' are all spelled correctly in the sentence provided.

Correct Answer: A

Rationale: Choice A is the correct answer. 'Therefore' is correctly used as a transition word with proper punctuation in this sentence. In a compound sentence like this, a semicolon is used before the transition word to connect two independent clauses. Choice B is incorrect because it lacks the necessary punctuation to separate the independent clauses. Choice C is incorrect as a colon is not typically used before a transition word in this context. Choice D is incorrect because 'and' does not function as a transition word in this sentence.

Correct Answer: C

Rationale: In sentence C, 'Jorge assigned the class some math problems,' 'the class' is the indirect object receiving the direct object 'some math problems.' In this sentence, 'the class' is the recipient of the action, making it the indirect object. The other choices do not contain an indirect object. In sentences A, B, and D, there are no instances of an indirect object. Therefore, the correct answer is C.

Correct Answer: C

Rationale: The correct answer is 'C: changeable.' This word is an exception to a common spelling rule where it retains the 'e' when adding the suffix '-able.' In contrast, choices A, B, and D follow standard spelling rules without exceptions.