Answer:
The correct answer is d) All of these are correct.
Explanation:
ETL stands for Extract, Transform and Load. An ETL system extracts data from the sources, enforces data quality and consistency standards, conforms data so that separated and maybe unrelated sources can be used together, and as a final step delivers data in presentation-ready formats so that developers can build applications and end users can take decisions.
Information can be transferred and passed way easier.
Your answer would be C. Internet since we all use the internet everyday to communicate through all over the world. We can currently communicate to the other side of the world with little to no effort now, almost 10 years ago it would of been very difficult.