Which is common to kidney and skeleton in mammals?
a)	Cortex	b)	Medulla	c)	Pelvis	d)	Radius

(c)

The term ‘pelvis’ is common to both kidney and skeleton in mammals. In relation to kidney, it can be described as a chamber in the kidney into which the urine drains from renal tubules before passing to the ureter. For skeleton, it is related with pelvic girdle or hip girdle.