What happens when the -ing suffix is added to a word ending in a consonant?

When the -ing suffix is added to a word that ends in a single consonant preceded by a single vowel, the correct approach is to double the final consonant before attaching -ing. This rule primarily applies to one-syllable words or words where the last syllable is stressed. For example, in the word "run," the final consonant "n" is doubled to form "running."

This process helps maintain the pronunciation of the original word and ensures that the stress pattern remains consistent with similar forms. Understanding this rule is essential for proper spelling in English and helps prevent changes in pronunciation when the suffix is added.

In contrast, if a word ends in more than one consonant or if the vowel is not stressed, no doubling occurs, which reflects the reasoning behind the other options presented.