Fill in the blanks with the most appropriate option:-

The skyscraper situated at Noida comprises ………. 500 apartments.

of

The most appropriate option to fill in the blanks is of.

The sentence is about the number of apartments in the skyscraper, and the word "of" is the most appropriate word to use in this context, as it is a preposition that is used to indicate possession or a part of something.

The other options are not as appropriate:

• To is a preposition that is used to indicate movement towards a place or person. It would not be accurate to use "to" in this context, as the skyscraper is not moving towards anything.
• With is a preposition that is used to indicate association or possession. It would not be accurate to use "with" in this context, as the skyscraper is not associated with the 500 apartments.
• Off is a preposition that is used to indicate movement away from something. It would not be accurate to use "off" in this context, as the skyscraper is not moving away from anything.