Concept:This question tests a fixed English phrase used to say something has never happened before.
Explanation:The phrase is “for the very first time”.
It follows the correct word order: preposition “for”, article “the”, intensifier “very”, ordinal “first”, and noun “time”.
Option A, B, and C change this order incorrectly.
Only option D keeps the natural structure and meaning.
Answer:D. for the very first time