While flying on an IFR flight plan, you experience two-way communications radio failure while in VFR conditions. In this situation, you should continue your flight under

Under which of the following circumstances will ATC issue a VFR restriction to an IFR flight?

What cruising altitude is appropriate for VFR on Top on a westbound flight below 18,000 feet?

Which clearance items are always given in an abbreviated IFR departure clearance? (Assume radar environment.)