Which is true regarding Class C airspace operations?

In Class C airspace, VFR (Visual Flight Rules) flights are separated from IFR (Instrument Flight Rules) flights, ensuring that aircraft operating under either set of rules maintain a safe distance from one another. This separation applies at all times, regardless of whether it is day or night. The operational structure of Class C airspace is designed specifically to promote safety by managing the movements of both VFR and IFR traffic, allowing pilots to operate their aircraft without the risk of conflicting paths.

In contrast, the other options do not accurately reflect the operational standards in Class C airspace. For instance, clearance is indeed required for VFR flights operating within this type of airspace; they cannot freely enter without communication with air traffic control. Additionally, while traffic information may be available upon request, it is not a guarantee, making this an incomplete statement regarding the services provided in Class C airspace. Thus, the assertion that VFR flights are always separated from IF flights day and night accurately represents the regulations governing Class C airspace operations.