After each of the following sentences, a list of possible interpretations of the...

The given sentence is: "The proprietor and his accountant have had a running battle over the last financial report." In this context, "a running battle" is an idiomatic expression that means a series of ongoing disagreements or arguments between two parties. It is a metaphorical way to describe the continuous conflict between them.

The correct interpretation of the sentence is Option B: a series of arguments on the report. This means that the proprietor and his accountant have had several disagreements or arguments regarding the last financial report.

It is important to note that idiomatic expressions like "a running battle" can make a sentence more engaging and expressive, but they can also make it harder for non-native speakers to understand the meaning. It's always a good idea to familiarize yourself with common idioms and their meanings to better understand and interpret English sentences.