When adding the suffix 'es' to the word 'fox', what is the correct spelling?

The correct spelling when adding the suffix 'es' to the word 'fox' is 'foxes'. This is because 'fox' is a singular noun that ends with an 'x,' and in English, when a singular noun ends with certain letters like 'x', 's', 'sh', 'ch', or 'z', it typically requires the addition of 'es' to form the plural. Therefore, 'fox' becomes 'foxes' to indicate more than one fox.

While multiple answer options here seem to display the same correct answer, the emphasis remains on the proper application of the spelling rules that govern the formation of plurals in English. This knowledge is essential for maintaining proper grammar and clear communication in writing.