Correct option is A
The correct sequence is
B, A, C, D.
Explanation:
B: The paragraph begins with the idea that all great thinkers derive inspiration from ancient tradition. This introduces the foundational thought.
A: Expands the idea by explaining that great thinkers operate on a high plane of thought.
C: Explains why they need the high plane of thought—because it is essential for their existence.
D: Concludes the paragraph by discussing what is engendered (spiritual or intellectual pride) on this high plane.