In the context of coastal landscapes and management in the UK, which of the following best defines the strategy of 'managed realignment'?
The construction of rock-filled wire cages at the cliff base to reduce the hydraulic action of incoming waves.
The artificial relocation of sand from areas of deposition to areas of severe erosion along the same beach profile.
The deliberate breaching of existing coastal defences to allow the sea to flood low-lying land, creating intertidal saltmarshes that naturally absorb wave energy.
The engineered redirection of longshore drift currents using offshore breakwaters to change where sediment is naturally deposited.
