The correct answer is True
Step-by-step explanation:
Suffixes are syllables or affixes added at the end of words to form new ones and add meaning to words. Depending on the suffix as well as the word this is added changes occur in terms of spelling. In the case of adding the suffix "-ing", which is used mainly create gerunds or present participles, changes occur in words that end in "-e" such as the word "love" that changes to "loving", as well as in some words that en with one vowel and one consonant such as the word "run" that changes for "running" and also the word "omit" that changes to "omitting". Thus, it is true to add the suffix "-ing" to omit requires a spelling change because the consonant "t" is doubled.