Final answer:
The statement that 'ren/o' is the combining form for the kidney that is often used to indicate surgeries and diseases is true.
Step-by-step explanation:
The correct statement is True. The combining form for kidney that is often used to indicate surgeries and diseases is ren/o. An example of this is "renal", which pertains to the kidneys, as in renal failure or renal disease. In contrast, the combining form "nephr/o" is also used, particularly in the term "nephrology", which is the medical field studying kidney function and kidney-related diseases. Nevertheless, "ren/o" is commonly associated with clinical settings, surgical applications, and conditions related to the kidneys.