Choose the correct sequence that represents a human excretory system :
1
Kidneys → Ureter → Urethra → Urinary bladder
2
Ureter → Kidneys → Urinary bladder → Urethra
3
Kidneys → Ureter → Urinary bladder → Urethra
4
Ureter → Urinary bladder → Kidneys → Urethra
5
Not Attempted