Italy, Greece and Spain, hit hard in Europe's sovereign-debt crisis a decade ago, are once again running big budget deficits. Like President Biden, their leaders plan to spend on a grand scale to revamp their economies, betting that ambitious investments can give a lasting boost to growth. These countries could be saddled with some of the world's highest debt ratios if the gamble doesn't work, potentially destabilizing the eurozone. But if the return to big borrowing pays off, it will strengthen calls for a European fiscal union.f "ambitious investments" give a "lasting boost to growth" the investment must __________. (Please choose the best answer.) Group of answer choices shift out AD in the AS-AD framework shift out SRAS in the AS-AD framework Must not be funded by deficit spending. improve the production function not increase the national debt