Step 1: Determine the main problem.Sentence (C) identifies the central issue: funding cuts necessitate expenditure reduction. This is the logical starting point.
Step 2: Identify the proposed solution.Sentence (A) offers a solution to (C): online classes to save money. Thus, (A) follows (C).
Step 3: Find the elaboration on the solution.Sentence (D) elaborates on the online classes, detailing their function. Therefore, (D) follows (A).
Step 4: Locate the concluding statement.Sentence (B) reassures by stating the curriculum's preservation. This concludes the sequence.
Step 5: Assemble the order.The sequence is (C) Problem \textrightarrow (A) Solution \textrightarrow (D) Elaboration \textrightarrow (B) Conclusion, resulting in the order (C), (A), (D), (B).