Try to keep your cadence over 80 rpm (ideally, 85+) to reduce muscle tension.
Purpose: Test out all the equipment you intend to use on race day. Gently ride the bike you will race with (test brakes, every gear of shifting, CamelBak or bottles, pump, etc.). We want to make sure anything/everything you use on race day works perfectly. If not, you have time to correct it.
The workout presumes that your C-race fell within a training block for an upcoming A-race. Therefore, you need to complete the week's targeted TSS or hourly volume. Adjust the time of this workout accordingly. Riding outdoors at a relatively moderate pace is ideal. Some variability in pace is just fine. Perfect day for a group ride and talk about yesterday's race.