I want to know the answer to the following question:
What is the name of the insulator in all capacitors that can store energy by becoming polarized?
All the background I'm provided with is that "The forms of practical capacitors vary widely, but all contain at least two electrical conductors (plates) separated by a dielectric (i.e. an insulator that can store energy by becoming polarized).". Is that enough to answer the question?
Answer: yes