Fill in the blanks with suitable Preposition from the given alternatives. The population _______ the turtle in Assam has gone down by a great extent.

The correct answer is - "of". Key Points From the given options, the most appropriate Preposition is "of" . Preposition "of" indicates 'belonging to/possession for non living things" . Example - Legs of the chair has broken. Correct Sentence: The population of the turtle in Assam has gone down by a great extent. Additional Information For uses to indicate goal or destination too. Example - He is leaving for America tonight. At - uses before a specific point in time/area, with names of festivals, Example - We have our classes at 4 PM. In - uses to indicate a relatively bigger place, uses before year, month etc. Example - I was born in 1990.