Help me find the best PCB design and why that is the one?

From the worst to the best design due to impedance parameters that affect the signal i would do it as a) > b) > d) and c) because c) is the one with the lowest lenth and lowest curves, am I right?

EDIT: I know that all the designs could work but I want to know which one is the best one and the reason for that.

• all can be made to work Dec 15 '19 at 15:02
• I think you should add more design parameters. If the board only does DC, you're likely trying to optimize a design from 99.9999% to 100% Dec 15 '19 at 15:08
• What is the frequency of interest here? Is there a ground or reference plane above or below the trace? Dec 15 '19 at 15:49
• @SteveSh The only info I have are those pics, I just need to know what the best trace and the worst one between those resistances Dec 15 '19 at 15:56
• I would argue C is shorter than A, so at DC C might be superior. At non DC my guess is A becomes Superior. This kind of looks like homework are you familiar with the homework policy? Dec 15 '19 at 16:09

If you're designing this to carry a low speed, high current signal, then it would be better to either Move the two ends of the trace closer together (i.e. move R2 closer to PL1) or use a wider trace, or use a parallel trace on another layer, or ... If no other changes are possible, then possibly c is better than the other options, but more likely they'll either all fail or all work.