Answer:
d
Step-by-step explanation:
In java you can use pareDouble(string str) to convert the string into double.
for example if you have string like this.
string str =

then you can use
double mydouble = Double.parseDouble(str);
print(mydouble); //it will print out 16.45
but if the string would not be able to be parsed into double then you will get an error.