When Americans or Europeans expect the return on assets to be high relative to the return on assets, there is a demand for dollar assets, everything else held constant. euro; dollar; higher dollar; euro; constant euro; dollar; lower dollar; euro; lower

When Americans or Europeans expect the return on ___euro assets to be high relative to the return on ___dollar assets, there is a ___low demand for dollar assets, everything else held constant.

Explanation:

This implies that the euro assets are earning more profits than the dollar assets, making the euro assets more attractive to American or European investors than the dollar assets.  This follows the natural law of the market forces of demand and supply.  Investors are always attracted to better yielding assets than their comparatives.

a.