How does the elastic clause of the constitution allow the government to stretch its powers to meet new needs of the nation?

The correct answer was

By giving Congress the right to exercise powers not specifically listed in the Constitution

fearing kabuki could corrupt the nation’s morals, japanese government officials

explanation:

the national morals was so the japanese and the kabuki would stop fighting

“i think it is very plausible that if there are five votes to end the death penalty, it could be with the people who are on the court right now,” - smith

so basically it is not clearly and consistently imposed