Write True or FALSE: The highest value of probability of an event is 1.

Answer

To determine whether the statement "The highest value of probability of an event is 1" is true or false, we can analyze the concept of probability.

### Step-by-Step Solution:

1. **Understanding Probability**:
- Probability is a measure of the likelihood that an event will occur. It is a number between 0 and 1, inclusive.

2. **Defining the Range of Probability**:
- The probability of an event can be expressed as:
\[ 0 \leq P(E) \leq 1 \]
- Here, \( P(E) \) represents the probability of event \( E \). A probability of 0 means the event will not occur, while a probability of 1 means the event will certainly occur.

3. **Identifying the Highest Value**:
- The highest value that probability can take is 1. This indicates that the event is certain to happen.

4. **Conclusion**:
- Since the highest value of probability is indeed 1, the statement "The highest value of probability of an event is 1" is true.

### Final Answer:
**True**

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