Answer:
English often serves as a lingua franca throughout South and Southeast Asia because the British established their powers and rules over the south and South East Asia. After World War 2, France became a lingua franca
I'm not 100% sure... but I would say B.
Assuming that you're talking about push and pull factors, population wise. A pull factor may be, better education, better housing, or better jobs. If you could find a better job somewhere else, that is a pull factor. hope this helps, have an amazing day :)
A because plasma is quite uncommon
