Hi there, the correct answer your looking for is:
A.
If im on the right track then a way to right it with dashes would be: Sacrificing her was a mistake-a mistake that could have been avoided. but i may not have understood the question??
Answer:
D
Explanation:
I dont have an explantion but D but i guess B technology do impact you becasue you can get distracted easily
Answer:
B
Explanation:
The sentence is already proper and doesn't need to be changed :).