Essentially, we're trying to get to the renal artery from the femoral.
We cross through internal iliac (B) already to reach the aorta.
Remember the branches of the abdominal aorta: Celia -> SMA -> Renal -> IMA (FA 2020 pg. 363)
Celiac (A) and SMA (C) is superior to the renal so cross them out.
We're left with testicular artery.
is ihst nqtouesi sngkai hwta we ipscllayhy sasp otgruhh or y?b
This question in it's essence is asking that after inserting the catheter in the femoral artery, which landmark should we use beyond which superiorly lies the renal artery, and the answer is the origin of the testicular artery. What a weirdly worded question though. :?