I know someone who could answer that for you
I believe the answer is A, but Im not 100% I hope this helps!
If the equations have the same slope for example y=4x+2 AND y=4x+3 have the smae slope of 4/1, making them parallel but if the don't have the same slope for example y=2x+3 and y=4x+4 then they are not parallel
Answer:
The largest lake in Central Europe is Lake Balaton