Final answer:
Adriana communicates primarily through texting and social media, implying she would likely give out her social media profile rather than other contact information.
Step-by-step explanation:
The girl gives the man her cell phone number on the line. It is mentioned in the given information that Adriana used her smartphone extensively for sending texts and keeping in touch with friends. Texting implies exchanging cell phone numbers, which is a common practice.
If we are to deduce the answer from the given context, it seems the girl, named Adriana, has not made any phone calls but has been enthusiastically engaging with friends through texting and social media.
There is no explicit mention of Adriana giving out any particular form of contact information to a 'man on the line.' Given that she uses her smartphone as her main source of social interaction and has not made calls, we could reasonably infer that she might give her social media profile, which aligns with her means of communication: texting, tweets, and social media websites.