Question

1. The most common rule for forming plural nouns is A. dropping the last letter and adding -ies. B. changing the y to i and adding -es. C. adding -es to the word. D. adding -s to the word.

Answer 1

The correct option is D.
Most nouns are turned into plural forms by adding letter 's' to the nouns. Other nouns required adding 'es' or changing the 'y' to 'i; and then adding 'es', but these are small in number compare to those that require adding letter s. Examples of nouns that required addition of letter s in order to form the plural form are: boy, girl, pencil, pen, school, parent, etc.

Answer 2

Your answer would be d adding -s to the word. have a great day