Answer:
![3](https://img.qammunity.org/2020/formulas/mathematics/middle-school/j9nm6zke2w2yvzr90sfzxxfsj5zwj66fau.png)
Explanation:
It is important to know that, in order to find the digit in the tenth place of a decimal number, you need to indentify the first digit located to the right of the decimal point.
Therefore, knowing this and having the decimal number provided in the exercise:
![25.391](https://img.qammunity.org/2020/formulas/mathematics/middle-school/4592q88qlwf020hy7jrmn3jd8b9ykxo7qp.png)
You can observe that the first digit to the right of the decimal point is 3.
Therefore, the digit in the tenths place of ths decimal number is: