Answer:
The migrants from rural areas are pushed to urban areas because of better educational and job prospects.
Step-by-step explanation:
The first option is correct because nowadays the higher level of education is a big advanatge, so a lot of people from the rural areas move into the urban areas to get a better education (as well as their children), with the end goal being to have better job prospects.
The second option is not correct because unlike the period of the 20th century, nowadays, a person that doesn't possess a certain set of skills will not have a lot of job opportunities and will probably end up worse in the urban areas than in the rural ones.
The third option is not correct because this is something that affects migration from one country to another, not the internal migration, or very rarely.
The fourth option is not correct because the transopration links are not on the top of the list of things that people have when moving from rural to urban areas, but it is a better standard of living.