True.

The supervisor must visit at least once every 6 visits. By the time a student has made 10 visits, the supervisor must therefore have dropped by once or more.

The two-week rule only comes into effect when you don't clock up 6 visits by two weeks, which means the client gets their supervisor visit before the 6th visit. Again, this means they've had one by Visit 10.

I'm answering this from a multiple choice paper perspective. If there's a better answer (one that says "Every 6th visit"), I'd pick that.