Final answer:
Open scheduling is the type of scheduling that sees patients on a "first come first serve" basis.
Step-by-step explanation:
The type of scheduling that sees patients on a "first come first serve" basis is open scheduling. In open scheduling, patients are seen in the order in which they arrive, without any specific appointment times. This type of scheduling is commonly used in walk-in clinics or urgent care centers, where patients can come in at any time and are seen on a first-come, first-served basis.