The vast amount of seaweeds present in the ocean may provide an endless source of:

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Carbon monoxide

Hydrogen supplied

Methane

None of these

answer is C.

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Detailed Solution

Concept- There is no official definition for seaweed. They are a group of microscopic, multicellular, and marine algae known as microalgae and marine plants. They belong to a polyphyletic group and do not have a common multicellular ancestor. There are many thousand species of seaweed, while the exact number is still up for debate.
Seaweeds may be utilized in a variety of ways, including as food, medicine, and herbal remedies. In both wound dressings and diet tablets, seaweed extract is utilized. Seaweeds are utilized to make packaging that is edible. Seaweeds produce oxygen and drain the water of waste nutrients. In addition to being used as fertilizers and animal feed, seaweeds also aid in the growth of fish. The generation of methane is the largest possible application of algae, even if all the uses of seaweed described above are feasible and there are many more that haven't. This method, called anaerobic digestion of microalgae, has promise as a renewable energy source for both commercial and home use. An integrated algae bioreactor is used to grow the algal biomass that will be used to break down to produce methane. Thus generated biogas is enriched, offers unparalleled benefits, and is environmentally benign.
Hence, the correct option is 3.

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