True or False: Frounce is a disease of the mouth and throat.

Frounce, also known as canker or canker sore in avian species, specifically affects the oral cavity and the upper digestive tract of birds. It is caused by a protozoan parasite called Trichomonas gallinae, which can lead to lesions in the mouth and throat of affected birds. The disease often manifests with symptoms such as difficulty eating, foul breath, and visible lesions in the oral cavity. The implications of this disease highlight the importance of maintaining proper hygiene and monitoring the health of birds, especially in the context of falconry and bird care.

Other options would not accurately reflect the nature of frounce, as it specifically involves the mouth and throat and is not a general or different type of health issue. Therefore, affirming the statement as true correctly identifies the disease's specific impact on an affected bird's mouth and throat.