Based on the definitions provided:
- Sonia's statement that a virtual meeting is limited to two parties is incorrect. Virtual meetings can include multiple participants.
- Lydia's statement that a meeting qualifies as virtual if the participants use video, audio, and text to communicate is a more accurate definition of what constitutes a virtual meeting.
- Prateek's claim that an employee can only hold a virtual meeting with someone from within their own organization is also incorrect; virtual meetings can happen between individuals from different organizations or any number of participants outside their own company.
Therefore, the correct answer is only Lydia.