The phenomenon of glowing sea water signifies changes in the marine environment. (Identify the plural of the underlined word from the choices given.)

The correct answer is '2' i.e. phenomena 

Key Points

• The word "phenomena" is the plural form of "phenomenon," which means an observable event or occurrence. (घटना)
• Phenomenon refers to a singular event, whereas phenomena refers to multiple events or occurrences.
• In the given sentence, the plural form is required to indicate more than one instance of this glowing event occurring in the marine environment.

Correct sentence: The phenomenon of glowing sea water signifies changes in the marine environment. The glowing sea waters are rare phenomena observed in some places.

Additional Information

• Option 1: "phenomenas" is incorrect because the plural of "phenomenon" is "phenomena," not "phenomenas."
• Option 3: "phenomenal" is incorrect because "phenomenal" is an adjective, meaning extraordinary or remarkable, not the plural of "phenomenon."
• Option 4: "phenomenum" is incorrect because "phenomenum" is not a valid word in English. The correct word is "phenomenon" (singular) and "phenomena" (plural).