In this analogy, 'pretty' is being compared to 'beautiful'. Option B. 'key is to unlock' is the correct answer because just like 'pretty' and 'beautiful', 'key' and 'unlock' are related in terms of unlocking something.
The analogy given is 'Pretty is to beautiful as ____'.
An analogy is a comparison between two things based on their similarities.
In this analogy, 'pretty' is being compared to 'beautiful'.
Option B. 'key is to unlock' is the correct answer because just like 'pretty' and 'beautiful', 'key' and 'unlock' are related in terms of unlocking something.
Learn more about Analogy here:
https://brainly.com/question/21901791
#SPJ2