[Answer] Like humans, most species in the animal kingdom have a single heart. But there is an exception. How many hearts does an octopus have?

Step 1 : Introduction to the question "Like humans, most species in the animal kingdom have a single heart. But there is an exception. How many hearts does an octopus have?"

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[Ans] which keyword is used to monitor statement for exception?

Step 1 : Introduction to the question "which keyword is used to monitor statement for exception?"

Alternative approaches to exception handling in software are error checking, which maintains normal program flow with later explicit checks for contingencies reported using special return values or some auxiliary global variable such as C's errno or floating point status flags; or input validation to premptively filter exceptional cases.