What is a major source of human generated pollution that enters the oceans and that can result in a loss of biodiversity?

emissions into the air
farming runoff
fishing boat bycatch
trash from cruise ships

Trash from cruise ships

Ocean is used as a waterways, which means it is used as a medium of water transportation by the human society. Unfortunately due to human intervention   and increase in dependence upon water transportation. The water of the ocean has been contaminated which is responsible for the decrease in the biodiversity of the oceanic ecosystem. The trash from the cruise ship is the relevant option because the release of contaminants may float over the water and depletes the entry of the atmospheric oxygen into the water. The limitation of oxygen and contamination of water can be responsible for the mortality of the sea animals.