The main idea doesn't explain in detail why it is the main idea. It doesn't prove that it is the main idea, it only states so.
Answer:
SmartPhone
Explanation:
The Star Trek and sci-fi writer David Gerrold predicted the rise of smartphones way back in 1999 when cellular phones just started to appear in people's lives.
This look hard, good luck on it.
I’m pretty sure it’s A) Lepidus