Final answer:
A fixture is to permanent as an impression is to temporary.
Step-by-step explanation:
The analogy in the question is comparing the relationship between 'fixture' and 'permanent' to that between 'impression' and another word. A fixture is something that is permanently attached or fixed in a certain place or position, similar to something that is permanent. So, to complete the analogy, we would look for a word that represents something like an impression but is not permanent. Out of the given options, the word that fits best is 'temporary', since an impression is something that is not permanent and can fade away or change over time.
Learn more about Completing analogies