Push factors are conditions or circumstances in one's home country that encourage or force individuals to leave and seek better opportunities elsewhere.

A. Political Turmoil: Political instability, conflict, or turmoil in one's home country can be a significant push factor for migration. People often seek safety and stability in other countries when their home country is experiencing political unrest or conflict.

B. Better job opportunities: The lack of adequate job opportunities or the presence of better employment prospects in another location can be a strong push factor for individuals to migrate. People may leave their home country in search of higher-paying jobs and better career prospects.

C. Unemployment: High levels of unemployment or underemployment in one's home country can push individuals to seek opportunities in places with lower unemployment rates or where they believe they have a better chance of finding work.

D. Economic backwardness: Economic underdevelopment, poverty, and a lack of economic opportunities in one's home country can serve as a push factor for migration. Individuals may leave in pursuit of a better standard of living and improved economic conditions in another place.

So, the correct answer is option 3. A,C,D.