Final answer:
The primary accent in the pronunciation of the medical term 'hysterorrhexis' falls on 'TERO'.
Step-by-step explanation:
The primary accent in the pronunciation of the medical term hysterorrhexis falls on C) TERO.
In this term, the syllables are divided as hys-te-ror-rhe-xis. The primary accent is placed on the third syllable, which is TERO.
The primary accent in a word refers to the stress or emphasis placed on a particular syllable. In this case, the syllable receiving the primary accent is TERO.
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