The reason for its popularity in the industry is clear.

This is one reason for their popularity, especially with children.

But not too near, either, and that appears to be a good part of the reason for his popularity.

There are several reasons for the popularity of these systems.

There are many reasons for the popularity of the professional game.

Another reason for its popularity has been the minimal cost.

This theme seems the most important reason for the play's popularity.

Another reason for the popularity of the work is its sympathetic treatment.

How does one account for the popularity of such a dark song?

But the ease of production is not the only reason for the play's popularity.