What rule applies most closely to this word?
avail-
• Group I. If the root is a full word, the ending is usually -able.
• Group II. When the root is full word except for a final e, the forms usually are spelled with -able.
• Group III. The suffix -able always follows
• Group IV. When the root has other forms built on the letter a, the -able form is used.
• Group V. When the root ends in hard c or hard g, -able is used.
• Group VI. When the root is not a full word, -ible iS is used.
• Group VII. When the word has an immediate -tion form. iS -ible is used.
• Group VIII. When the root ends in ns, miss, or soft g. cor g, ible is used.