use the right form of adjective given in the bracket. The Taj Mahal is one of the monuments in the world. (beautiful)​

The Taj Mahal is one of the most beautiful monuments in the world.

In this sentence, we use the superlative form of the adjective "beautiful" because we are comparing the Taj Mahal to all other monuments globally, indicating that it is among the most remarkable and aesthetically pleasing. The superlative form is created by using "most" before the adjective, which is the appropriate structure when we are discussing extreme qualities or comparing three or more entities. In this example, the phrase emphasizes the unique and exceptional beauty of the Taj Mahal, reinforcing its status as an iconic symbol of architectural elegance.