Final answer:
The increased risk of dehydration is associated with prolonged immobility after a fall, particularly beyond two hours. Dehydration is a health concern that requires attention, especially following an accident or in cases where individuals are prone to falls. Therefore, the correct option is b.
Step-by-step explanation:
The risk of dehydration is increased after remaining on the floor for a prolonged period following a fall. While the exact time after which the risk of dehydration significantly increases is not specified in the given context, prolonged immobility can certainly lead to a number of health issues, including dehydration, especially if the person is unable to access water. Assessing the situation, an individual who remains on the floor for more than two hours after a fall is potentially at a higher risk for dehydration and other complications.
Dehydration after a fall is a serious concern, particularly for the elderly, who are prone to falls and may not be able to get up without assistance. In general, it is important to ensure that individuals who have fallen are checked on regularly and receive prompt help to reduce the risk of dehydration and other health concerns.