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mutual exclusion (mutex) is a program object that prevents simultaneous access to a shared resource. This concept is used in concurrent programming with a critical section, a piece of code in which processes or threads access a shared resource.

Hence, option B is correct...

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Mutual exclusion happens when two processes share some resources. This is because if both processes access the resource at same time, it leads to error.

Ans is B.
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Among process that share resources
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