Answer:
Option B:11.9
Explanation:
We are given that B is the mid point of AC.
Length of AC=23.8 units
We have to find the length of AB.
We know that when B is the mid point of AC then
AB=BC
AB+BC=AC
By using segment addition property
Let AB=x
Then , BC=x
Substitute the values then we get
![x+x=23.8](https://img.qammunity.org/2019/formulas/mathematics/high-school/vciiwbp85amsedpgsa1nslfwb53fte8q6t.png)
![2x=23.8](https://img.qammunity.org/2019/formulas/mathematics/high-school/88p2waca5i1m3fwv44pl70nhi6dboaqtbt.png)
![x=(23.8)/(2)](https://img.qammunity.org/2019/formulas/mathematics/high-school/d9evd8kw5xvrpg54e4oam70bq61mmdfixs.png)
![x=11.9](https://img.qammunity.org/2019/formulas/mathematics/high-school/4dzd4nd8wnh2l8yenawb3ocxmet1hoyt1c.png)
Hence, length of AB=11.9 units
Option B is true.