Answer: "Her lips were as red as roses in the spring"
Explanation:
The figurative language used in the last sentence is a <em>simile</em>
A <em>simile</em> is a comparison between two things that aren't alike--a simile <u>MUST</u> have the words "like" or "as", and this sentence uses the word "as" to compare her lips and roses.
I believe the answer is D. This is because the ":" symbol is used to list what the previous phrase was describing.