Final answer:
The instrument used to examine the vagina is the C. speculum. It is specifically designed to open the vaginal cavity for examination, unlike a laparoscope, otoscope, or cystoscope, which are used for other purposes.
Step-by-step explanation:
Examining the Vagina
The instrument used to examine the vagina is the C. Speculum. A speculum is a medical tool that is inserted into the vaginal opening to dilate it, providing a clear view of the vagina and cervix.
This is critical for performing gynecological examinations and procedures. Other devices mentioned relate to different types of examinations: A laparoscope is used to visually inspect the abdominal cavity, typically used to diagnose conditions such as endometriosis.
An otoscope, on the other hand, is designed for examining the ear. Lastly, a cystoscope is used for exploring the urethra and bladder.