Answer:
because the stress is on the second syllable of the base word ending in consonant + vowel + consonant
Explanation:
If a multiple-syllable word ends in a single consonant preceded by a single vowel and the accent is on the last syllable of the root word, double the final consonant before a suffix beginning with a vowel.
e.g. refer – referred, occur – occurrence, commit – committal, rebel – rebellion.
Answer:
I am almost 100% sure it's y+2
