Answer:
a. universal truths
Step-by-step explanation:
In his speech, Faulkner states that the young writers of the day need to learn how to talk about the basic elements of the world. A good writer should only focus on the "verities of the heart" and universal truths. He tells us that if a story lacks these truths, then it is ephemeral and doomed. If the author does not address the universal truths of the world, his writing will "leave no scars."