Which one of the following lines best illustrates personification?
a. a narrow wind complains all day.
b. the fog comes on little cat feet.
c. she floated graceful as a dove.
d. spring is a dream unsung.

A. A narrow wind complains all day.

Personification refers to the metaphor used as a literary tool. Personification describes the action or movement of non-living thing mimicking or resembling the action and behavior of human. A narrow wind complains all day defines the action or movement of wind which is a non-living component of the environment with human behavior of making complains illustrates personification. This states that the wind blows in a speedy way and influencing other components of the environment in a drastic way.  

uranium fissions/breaks up giving out energy and neutrons