Choose the interpretation that is most appropriate for each sentence. You will certainly break his heart if you tell him that. This means that telling him t...

Answer Details

The interpretation that is most appropriate for the sentence "You will certainly break his heart if you tell him that" is "make him very sad". The phrase "break his heart" is an idiomatic expression used to convey extreme emotional distress or sadness. Therefore, telling him whatever it is that is being referred to in the sentence would cause him great sadness.