Answer:
Increasing
Step-by-step explanation:
The word 'augment' as used in the passage can best be described with the word 'increasing'.
From the excerpt, the question is asked owing it to survivors not to AUGMENT (Increase) their sorrow by excessive grief.
From the passage, we can infer that the speaker doesn't want to open new wounds for the survivors as it seems like they remember their sorrow and grief all over again when people begin to display much grief about the sad situation that befell them.