Answer: The correct option is (C)
![0\leq x\leq 1.](https://img.qammunity.org/2020/formulas/mathematics/middle-school/bwmszyzdrue9d7gsrx8nas5y7q7f2588ln.png)
Step-by-step explanation: We are given that x is the probability of an event happening.
We are to select the correct option.
We know that
the probability of the happening of any event lies between 0 and 1.
If an event is a sure event, then its probability of happening is 1 and if it is a null event, then its probability of happening is 0.
For all the other events, the probability lies between 0 and 1.
So, we get
![0\leq x\leq 1.](https://img.qammunity.org/2020/formulas/mathematics/middle-school/bwmszyzdrue9d7gsrx8nas5y7q7f2588ln.png)
Thus, (C) is the correct option.