Does anyone have the answers to the "Electromagnetic induction" gizmos Virtual lab

i think the answer is a, hope this is right, that would be my best guess.

current flows in a wire

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles

this would be about 43%