Correct Answer is Option C - It has no impact because a fixed-rate mortgage cannot change.
Economic Downturn is the general slowdown in the economy over the period of time. During economic downturn, there is less demand for money and as a result there is fall in the price of credit. But in case of fixed rate mortgage the rate is always fixed irrespective of the economic scenario.
So, economic downturn has no impact on borrowers fixed rate mortgage because a fixed-rate mortgage cannot change.