C) As hydrilla is aquatic in nature, the roots do not have to search for water, and there is no need for xylem to absorb water because the plant is surrounded by water.
A high-interest rate means the opportunity cost to built or buy a house is high it is a possible channel. So when the interest rate is higher, there may be fewer new housing starts. The abstract point-scoring task requires a minimal model that illustrates a plausible causal channel.
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