Answer:
(c) 
Explanation:
If these are 
 Parallel, slope of both the lines is same. 
 Perpendicular, if they are -ve reciprocal of each other. 
In y = mx + c, slope is m. 
Compare, 
Slope of y=4x+1, is 4.
 of 8y-16=2x is 2/8 = 1/4, which is reciprocal of 4,but not -ve. 
So it is neither ll nor perpendicular.