Answer:
B. An increase in the average traveling speed of the individual's commute.
Explanation:
Bid rent theory is related to the price and rent of the real estate, and how they are related.
This is clearly defined by the theory as geographical in nature clearly demonstrates that is basically related to city center.
This is defined by the gap as every person wants the house near to the city center, as and when the gap increases the price also increases.
Accordingly when the speed of individual increases to commute to the real estate the price will decrease, as low speed reflects higher distance and accordingly higher price.
In simple terms the price decreases when the travel time decreases and price increases with increase in travel time.