Fill in the blank with a suitable Homophone choosing from the following options :

Last month we went by train to a book fair.

There is a steep rise in the Railway ________.

Fare

The correct answer is Fare.

The blank needs a noun that refers to the cost of the train journey. The word "fare" is a noun that means the cost of a passenger's journey on a train, bus, or other public transport. The other options are not suitable nouns for this context.

The corrected sentence is: "Last month we went by train to a book fair. There is a steep rise in the Railway Fare."