Final answer:
When looking superiorly up at the pelvis, you are viewing the pelvic cavity, specifically the lesser pelvic cavity or true pelvis. The perineum lies inferior to this area and would not be visible from this perspective.
Step-by-step explanation:
If you're looking superiorly up at the pelvis, you are looking at the pelvic cavity, specifically the lesser pelvic cavity or true pelvis which contains the bladder and other pelvic organs. The perineum is the region that lies inferior to the pelvic diaphragm and includes structures like the external genitals and anus, which would not be seen when looking superiorly into the pelvis. Therefore, the correct answer to the question is (B) Pelvic cavity.
The pelvic cavity is a narrow, rounded space in the lower part of the bony pelvis. It contains the bladder and other pelvic organs. The perineum, on the other hand, is a diamond-shaped space below the pelvic diaphragm, and it is located between the pubic symphysis, the coccyx, and the ischial tuberosities.