The correct answer is letter b: simile. This literacy device compares two different things using the words "like" or "as". In this play the author is using a simile in the the statement "His beard was as white as snow".
A simile is a figure of speech that makes a comparison, showing similarities between two different things. Drawing a resemblance with the words "like" or "as". Therefore, making it a direct comparison. In this case, they are using the word "as" to compare how the beard was white like the snow.
Every planet in the solar system has seasons. Most have four like the Earth -- called Winter, Spring, Summer and Fall -- but that's where the similarities end.