Words that sound like one another but have different meanings are called homonyms. Select the most appropriate homonym for the following sentence.
This is the _______ time that I've told you about this.

Fourth

The correct answer is fourth.

The words fourth and forth are homophones, which means they sound the same but have different meanings. The word fourth refers to the ordinal number that comes after third and before fifth. The word forth refers to moving forward or onward.

In the sentence "This is the _______ time that I've told you about this," the word fourth is the most appropriate homophone because it refers to the number of times that the speaker has told the listener about this. The other homophones, forth, forthe, and froth, do not have the same meaning and would not make sense in the sentence.