Answer:
Megan moves to Australia to work as a mining engineer - Pull factor
Lalitha travels to Britain after being awarded a scholarship at a respected university - Pull factor
Zafar moves to Canada because he could not practice his religion freely in his home country - Push factor
Nicholas decides to move to Italy because the cold climate in his home country is endangering his health - Push factor
Explanation:
The first option is an example of a pull factor because Megan is moving because she got a job opportunity that she liked in Australia.
The second option is an example of a pull factor because Lalitha goes to Britain after she got a scholarship, something that will help her greatly in her education and later in life.
The third option is an example of a push factor because Zafar cannot practice his religious beliefs in his own country, so he decides to move out.
The fourth option is an example of a push factor because Nicholas suffers and has health issues in his native country, so he moves out in order to go somewhere where it will be more suitable for his health.