For the first question regarding the simile "With each step, the dancer moved as gracefully as a swan on a tranquil lake," the purpose of using this simile is:
b. To emphasize the dancer's elegance.
For the second question concerning the passage "The sun blazed in the sky, relentless and fierce, driving all creatures to seek shelter from its fiery gaze," the author's purpose is:
a. To describe the harshness of the heat.