Rearrange all the following letters to form a meaningful English word:
$$\text{"NNIEROMVNTE"}$$

On counting and rearranging the given set of letters $\text{{N, N, I, E, R, O, M, V, N, T, E}}$, we can spell the word "ENVIRONMENT".
Let's check the letter counts:
$\text{E}\times 2,\text{N}\times 3,\text{V}\times 1,\text{I}\times 1,\text{R}\times 1,\text{O}\times 1,\text{M}\times 1,\text{T}\times 1$.
This matches option D perfectly.