The sentence to be completed: "Avalanche from the Nepal's worst earthquake in its history had almost shattered the neighboring areas of the capital; however NDRF team worked relentlessly day and night to _______ the looming devastation in the capital."

Word meanings relevant to the sentence:
- Alleviate: To make (something, such as suffering or a problem) less severe
- Resuscitate: To revive from unconsciousness or apparent death
- Mollify: To calm or soothe (someone's anger or anxiety)
- Aggravate: To make (a problem or injury) worse or more serious
- Forestall: To prevent or obstruct something anticipated or planned
- Amputate: To cut off (a limb or part of the body)

Suitable choices for the blank:
The NDRF team worked to reduce or prevent the devastation, so:
- Alleviate fits as it means to lessen the severity of devastation.
- Forestall fits as it means to prevent the looming devastation.

The other choices do not fit the intended meaning:
- "Resuscitate" relates to reviving life, not preventing devastation.
- "Mollify" fits calming a person, not reducing devastation.
- "Aggravate" means to worsen, opposite of what is intended.
- "Amputate" means to cut off a body part, irrelevant here.

Correct answers:
- Alleviate
- Forestall