All round me are words, and words and words, they grow on me like leaves, they never
Seem to stop their slow growing from within, But I tell myself, words
Are a nuisance, beware of them, they Can be so many things, a
Chasm where running feet must pause, to Look, a sea with paralyzing waves,
A blast of burning air or,
A knife most willing to cut your best Friend’s throat… words are a nuisance, but. They grow on me like leaves on a tree, they never run to stop their coming,
From a silence, somewhere deep within…

Which one of the following lines indicates the destructive character of words?

The correct option is A blast of burning air or,.

Explanation:
In the given poem, the speaker describes words as a nuisance and highlights their various dangerous and harmful attributes.
Specifically, the poem refers to words as:
1. "A chasm where running feet must pause, to Look" (representing an obstacle or danger)
2. "A sea with paralyzing waves" (representing immobilization or helplessness)
3. "A blast of burning air" (representing destruction, heat, and devastation)
4. "A knife most willing to cut your best Friend’s throat" (representing betrayal and lethal violence)

Among the given options, the phrase "A blast of burning air or," directly describes a force of nature capable of scorching and destroying things, thereby indicating the destructive character of words.
The other options describe the continuous generation or growth of words ("Seem to stop their slow growing", "They grow on me like leaves on a tree") or their source of origin ("From a silence, somewhere deep within"), rather than their destructive effects.