Pull factors can be defined as:

The definition of pull factors pertains specifically to the external influences that entice individuals to move to a new location, such as a country. These factors often include better job opportunities, higher living standards, improved quality of life, and favorable social conditions in the destination country. When individuals consider moving, they are often attracted to these positive aspects, which make the new location appealing compared to their current environment.

This contrasts with other options. For instance, the first option outlines reasons that discourage immigration, which are known as push factors, as they pertain to negative conditions in a person's current home that make them leave. The third option refers to conditions found in the home country, which again relates to push factors rather than pull factors. Lastly, social networks that deter people from leaving suggest influences that might inhibit migration, which is contrary to the concept of pull factors that encourage movement.

Overall, understanding pull factors helps clarify the motivations behind migration and reflects the dynamics of societal influences on individuals' decisions to relocate.