The answer would be
B. understanding
I think it’s Original Law
The Modoc myths were created by the Modoc, an American Indian tribe to explain the creation of the surrounding region. It was said that grizzlies could once walk on two feet and had the ability to speak.The grizzly bears disobeyed the Sky Spirit by marrying one of hiss daughters and having children that were not of his creation and so they were cursed to walk on four feet and they also lost the ability to speak.
Here's a few sentences with 'a'.
Billy helped a girl find her lost cat.
Georgia found a stray cat in an alley.
Remi got a suitcase for her birthday.