Migration into Punjab can contribute to:

The correct answer is: All of the above.

Migration into Punjab can contribute to labor for economic growth, cultural diversity, and demographic changes.

• Labor for economic growth: Migration can provide a source of labor for economic growth. Migrants can bring new skills and ideas to a region, and they can also help to fill labor shortages in certain sectors.
• Cultural diversity: Migration can also contribute to cultural diversity. Migrants bring their own cultures with them, and this can enrich the cultural life of a region.
• Demographic changes: Migration can also lead to demographic changes. For example, migration can lead to an increase in the population of a region, or it can lead to changes in the age structure of the population.

In conclusion, migration into Punjab can contribute to labor for economic growth, cultural diversity, and demographic changes.