Question

a lasting effect of the new deal can be seen when
great numbers of young people are out of work.
taxes are lowered to assist business owners.
the government intervenes in a time of national crisis.
certain social programs are declared unconstitutional.

Explanation:

The New Deal established a precedent for the U.S. federal government to take active, large-scale intervention in the economy and society during national crises (like the Great Depression). This principle of government intervention remained a lasting impact, unlike the other options: high youth unemployment was a pre-New Deal issue, the New Deal raised taxes for programs, and many of its programs were upheld as constitutional.

Answer:

C. the government intervenes in a time of national crisis.