4. Which of the following is the best revision for the quoted portion?

Answer: C

Explanation:

Which typically

The best revision for the quoted portion is "which typically," as it maintains the flow of the sentence while clarifying the relationship between the two clauses.

A) typically they

This option is incorrect because "typically they" disrupts the grammatical structure of the sentence. It does not adequately connect the idea of the rides ending in crashes to the context of the two friends discussing heavy subjects.

B) typically

While "typically" could work in isolation, it lacks the necessary connection to the preceding clause. It does not convey the same sense of continuity and context as "which typically," making it an incomplete revision.

C) which typically

This option is correct because it effectively links the two ideas, indicating that the rides, which typically end in crashes, serve as a backdrop for deeper discussions. It preserves the original meaning while enhancing the clarity of the sentence.

D) it typically

This choice fails to appropriately connect the ideas as well. "It typically" does not provide a clear subject for the verb and does not create the necessary relationship between the crashes and the discussions that follow.

Conclusion

The correct answer, "which typically," effectively connects the clauses and preserves the intended meaning of the original text. All other options either disrupt the grammatical flow or fail to provide the necessary clarity, making them less suitable than the chosen revision.