What is the primary condition of the CVC (1-1-1) Doubling Rule?

The primary condition of the CVC (1-1-1) Doubling Rule is that it specifically applies to one-syllable words that end in a consonant-vowel-consonant (CVC) pattern. This rule dictates that when a one-syllable word follows this structure and a suffix beginning with a vowel is added, the final consonant is doubled. For instance, in the case of the word "hop," when you add "-ing" to form "hopping," the final consonant "p" is doubled because it meets the CVC criteria.

While the other options may touch on elements related to word syllables or structures, they do not accurately capture the specific conditions under which the CVC (1-1-1) Doubling Rule is applied. The rule is not about all two-syllable words, vowel patterns, or prefixes; rather, it is strictly focused on one-syllable words that conclude with a CVC pattern, making the correct choice distinctly relevant in the context of this phonics rule.