Correct Answer: C

Rationale: The correct use of quotation marks is in option C. In this option, the entire quoted sentence is enclosed within double quotation marks. This is the standard convention for punctuating direct speech in English. Option A has an incorrect placement of single and double quotation marks. Option B lacks opening double quotation marks for the spoken sentence. Option D incorrectly places the closing quotation mark outside the question mark, which is not the standard punctuation rule for quoted sentences.

Correct Answer: D

Rationale: The prefix 'per-' commonly means 'through,' indicating movement from one side to the other or completely through something. In this context, 'through' is the most fitting interpretation as it aligns with the idea of complete passage or thorough involvement. The other options do not convey the concept of going completely through something. 'Across' implies moving from one side to another but not necessarily all the way through. 'By' denotes proximity or secondary involvement rather than passage through. 'With' indicates accompaniment or association, which is not reflective of the prefix per- in terms of movement or completion.

Correct Answer: C

Rationale: When a colon is used to introduce a list, it is placed after a complete sentence and serves to signal that what follows will be a list or an explanation related to the preceding sentence. Choice A is incorrect because a colon doesn't join two related sentences; it introduces what follows after a complete sentence. Choice B is incorrect as a colon is not used to set off direct quotes longer than five words; quotation marks are used for that purpose. Choice D is incorrect because a colon does not separate clauses in a compound sentence; it is used to introduce a list or explanation after a complete sentence.

Correct Answer: C

Rationale: The correct answer is C, 'Noticeable.' This word contains an exception to the common spelling rule of dropping the 'e' before adding a suffix starting with a vowel. In this case, the 'e' is retained in 'noticeable' before adding the suffix '-able.' Choices A, B, and D do not involve any spelling rule exceptions. 'Unclear,' 'Memorize,' and 'Grieved' follow standard spelling conventions without any irregularities.

Correct Answer: C

Rationale: Combining the sentences is most effective when using 'but' to contrast the two ideas. Option C is concise, clear, and provides the best flow, accurately capturing both the contrast 'but I lost them' and the sequence of events 'After spending hours looking for them, I found them in the freezer.' Options A, B, and D do not effectively combine the sentences or maintain the sequence of events and contrast between keeping track of the keys and losing them.