Answer:
occurrence
Explanation:
So, first we need to identify the suffix for each of the words given.
Then, when we subtract that suffix, we identify all the two-syllable words that end with short vowel + consonant pattern.
And then, finally, we identify the word whose last consonant doubled upon adding the suffix.
Having this in mind, the only word that meets these conditions is occurrence.
When we subtract the suffix -ence, we are left with occurr. Since the verb is occur, we see that the last consonant r doubled when the suffix was added.
This is also the case with other suffixes, as in occurred, occurring etc.
