Forming plurals

Question 1

If the word ends in a VOWEL the action to making the word plural should be

Answer 1

Adding -s

Question 2

If the word ends in a CONSONANT the action to making the word plural should be

Answer 2

Adding -es

Question 3

If the word ends in a a Z the action to making the word plural should be

Answer 3

Changing the -z to a -c and adding -es