How does the video seek to make the atom bomb seem less threatening

The correct answer to this open question is the following.

The video seeks to make the bomb less threatening by using the duck and cover exercise and by showing the people surviving after the attack during a picnic.

During the Cold War years, the government made mocks of how to react to possible bomb raid events. That is when they taught to duck and cover technique. If you were in school and the alarm rang, you immediately had to duck and cover under the table.

d. china

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d is the best choice