Answer:
The correct option is 2.
Explanation:
We need to find the number line that shows the best position of square root of 7.
We know that
![√(7)=2.64575131106](https://img.qammunity.org/2019/formulas/mathematics/high-school/iiktoqbu7nlpnlnkzf5i1n049dn1uazfx3.png)
![√(7)\approx 2.65](https://img.qammunity.org/2019/formulas/mathematics/high-school/rx17bcnonkrfgluc53s5tzy9cq39d8mr1z.png)
It means the dot near to 2.65 shows the best position of square root of 7.
In option 1, the dot is made at 1.7.
In option 2, the dot is made at 2.6.
In option 3, the dot is made at 3.5.
In option 4, the dot is made at 4.5.
Only 2.6 in near to 2.65.
Therefore, the correct option is 2.