Question: Aside from when they're speaking to Italians from their same town or region, where is a common place where Italians speak their regional language?

Is "In the early 20th century, the vast conscription of Italian men from all throughout Italy during World War I is credited with facilitating the diffusion of standard Italian among less educated Italian men, as these men from various regions with various regional languages were forced to communicate with each other in a common tongue while serving in the Italian military." the correct answer?
Select from the following.
+ yes
+ no
no