Question

In high seas, fishing grounds are marked out with floating structures called (A) bait (B) buoy (C) clap (D) hook

Answer 1

$\tt\LARGE{\red{hook}}$

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Answer 2

The floating structures are - B) buoy.

Buoy are the floating devices that are used to signify the beginning or end of different things. The buoys can be anchored as mark of signal.

They can be used to state end of fishing area, beginning of reef or deep water, place to tie the boats etc.

Buoys have different colors painted to signify different meaning or signals.