Final answer:
In FortiGate, traffic shaping policies manage bandwidth usage for individual applications, while traffic shaping profiles define the overall network traffic parameters that can be applied to policies.
Step-by-step explanation:
The primary difference between a traffic shaping policy and a traffic shaping profile in FortiGate is that a traffic shaping policy is used to control the bandwidth usage of specific applications or traffic types, whereas a traffic shaping profile sets up the parameters for traffic shaping such as maximum bandwidth and priority and can be applied to one or more shaping policies.
Option D is correct: traffic shaping policies manage individual applications, while traffic shaping profiles manage the overall network traffic parameters.