How does installing a seawall mitigate flood damage?

by rerouting floodwaters to green spaces

by moving a structure above flood level

by absorbing energy from storm waves

by protecting floodplains from flood damage

It reroutes the energy from storm waves back into the sea so its either A or C.

Explanation:Hope this helps

answer///multiple alleles;

the circled areas are referred to   as sunspots.   the sunspots are cooler than the   surrounding area.

sunspots are temporary phenomena on the photosphere of the sun that appear visibly as dark spots compared to surrounding regions. they correspond to concentrations of magnetic field flux that inhibit convection and result in reduced surface temperature compared to the surrounding photosphere.