Correct Option: B  [ Ultrasonography ]
Remark:
In medical terminology, USG stands for Ultrasonography. It is a diagnostic imaging technique that uses high-frequency sound waves to create images of internal organs, tissues, and developing fetuses. USG is commonly used in obstetrics, cardiology, and abdominal examinations as it is safe and non-invasive.
- Undersized gland: Not a recognized medical term.
- Unsegmented gonads: Incorrect and unrelated to imaging.
- None of the above: Incorrect as option B is correct.