Another reliable way to crack sentence-reordering questions is the "mandatory pair" method, spotting two parts that MUST sit next to each other because of grammar or meaning, then building outward from that pair.
Cross-checking against the answer choices: option A (ABCDE) opens with "but," which is grammatically impossible for an opening sentence; option B (CDBEA) breaks the E-A pair; option D (DEACB) puts D before the subject it modifies even exists. Only option C keeps every mandatory pair intact.
Let's summarize:
This pairing approach is often faster than reading the whole passage start to finish, especially under exam time pressure.
Directions: In the following question, different parts of a sentence/passage have been jumbled. Choose the option that represents the best sequence to make the sentence/passage coherent and meaningful. Ignore punctuation marks.
P. The real challenge today is unlearning, which is much harder.
Q. The new world of business behaves differently from the world in which we grew up.
R. Learning is important for both people and organizations however.
S. Each of us has a mental model that we've used over the years to make sense, but.