Which of the following phrases is an example of a simile?

A simile is a figure of speech that compares two different things using the words "like" or "as." In the selected phrase, "The stars twinkled like diamonds," a comparison is made between the way stars twinkle and the way diamonds shine or sparkle, using the word "like." This clearly illustrates the characteristics of a simile, as it draws a vivid comparison that enhances the imagery and helps the reader visualize the scene.

The other phrases don't fulfill this function. One describes a sound, while another makes a comparison without using "like" or "as." The remaining choice shows a comparison of speed but utilizes "than" instead, which does not align with the structure of a simile.