Step 1: Identify the topic sentence or the main problem.
Sentence (C) introduces the core problem: the university is facing funding cuts and needs to reduce expenditure. This is the most logical starting point for the paragraph.
Step 2: Look for the proposed solution to the problem.
Sentence (A) presents a solution to the problem described in (C): offering online classes to save money. So, (A) should follow (C).
Step 3: Find the sentence that elaborates on the solution.
Sentence (D) provides more details about the proposed online classes ("these proposed 'virtual classrooms'"). It explains how they would work. Therefore, (D) should follow (A).
Step 4: Find the concluding or reassuring statement.
Sentence (B) offers a point of reassurance about this new plan—that the curriculum will remain the same. This serves as a good concluding thought.
Step 5: Assemble the logical order.
The logical sequence is (C) Problem \textrightarrow (A) Solution \textrightarrow (D) Elaboration on solution \textrightarrow (B) Concluding detail. This gives the order (C), (A), (D), (B).