Answer:
The uncertainty and fear connected to change.
Step-by-step explanation:
There are many aspects of The Metamorphosis that readers will probably not be able to relate to, as the story was written many years ago in a very different context. However, other themes are universal. One of the ideas that most likely resonates with a lot of people in modern times is the fear that is connected to change and transformation. This is exactly what Gregor experiences when he turns into an insect.