Answer:
C. The growth rate in the United States relative to the growth rates in other countries.
Explanation:
The growth rate of the U.S. relative to the growth rate of other countries does not directly influence, or determine, the rate of consumption spending.
When this indicator is analyzed in isolation, it can help explain consumption spending because consumption, as it is known, is a part of GDP.
However, the comparison in itself with other countries does not explain consumption spending in the U.S.