A quicker approach here is to scan for parts that clearly cannot be the opening line and eliminate answer choices on that basis alone before reading the full sentence.
This confirms CDBEA, option D, as the answer. Option B (CDEBA) inserts E before B, disconnecting the "suffered as relics" idea from its "till replaced" continuation. Option C (CBADE) skips straight from C to B, losing the causal reason given in D.
Let's summarize:
This elimination-first strategy narrows four or five options down to one or two very quickly.
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.