Which of the following phrases best describes the disposal method used for high-level nuclear waste?

concentrate and contain

dilute and disperse

delay and decay

burn and bury

The disposal method used for high-level nuclear waste Concentrate and contain

Explanation:

High intensity nuclear waste is an underlying issue for the world where the generated nuclear waste is one side very hazardous and on other side would help us  in many viable processes but the negative sides of a consequence  just outnumber the positive sides of the situation.

Concentrate and contain is a waste disposable method which enables the nuclear waste to be preserved and isolated and later be used when the time comes. Other methods would not be suggested because they could cause a huge amount of dangerous radioactivity in oceans which is often harmful for people.

plasma - state of matter made up of electrically charged particles