Body of water along australia's northeast coast
a. coral sea
b. great barrier reef
c. atlantic ocean

Body of water along Australia's Northeast Coast is coral sea

Explanation:

Many people consider the Coral Sea as a little gift from the South Pacific Ocean to Australia. These coral sea was formed 58 million years ago. It is an important source for the Great Barrier Reef. Confirmed by seismic activity, many geological formation processes are still on their way ahead and haven't stopped.

This water body has reef which is enriched and has soothing weather. Coral sea was announced as world's heritage site by UNESCO. Sadly this beautiful place was a battlefront for world war II for both sides.

it sounds like either a or c