Correct Answer: building

Solution : The correct choice is the first option .

Building is the appropriate word that should be used in the sentence. It helps convey the intended meaning that plastic occupies the ocean, and thus it gets collected in the guts of seagulls and sharks.

The meanings of the other options are as follows:

• Burning means getting destroyed by fire.
• Provoking means annoying.
• Sailing is an occasion when a ship leaves a port.

Therefore, the complete sentence is: "Plastic inhabits the oceans, building up in the guts of seagulls and great white sharks."