<span>The question is asking us which of the following singular nouns changes vowels when made plural. Let's list the plural forms of the words: A. Boys B. Sheep C. Bisons D. Mice. We see that the plural of "boy" and "bison" is regular and that "sheep" and "mouse" have irregular plurals, but only D. Mouse forms its plural by a vowel change - answer is D.</span>
She was one of the most powerful goddess in the Greek pantheon. She is seen as the Goddess of wisdom and also the god strategic warfare. When she appeared in the epic poem it was said she arrived in full clad armour.
