Final answer:
The correctly spelled medical term for the inflammation of the throat is 'pharyngitis'. It uses the 'ph' spelling for the [f] sound and is composed of the root 'pharynx' plus the suffix '-itis' for inflammation.
Step-by-step explanation:
The correctly spelled word for the inflammation of the throat is pharyngitis. The spelling pharyngitis is the accurate medical term which indicates this common condition. In the spelling of pharyngitis, the ph combination represents the sound [f] as in graph or phone. Additionally, the spelling of the root of the word relates to the anatomical term pharynx, followed by the suffix -itis, which denotes inflammation.