Voltage = 18 v
current = 36 amps
resistance = ?
0.5
2
18
54

I am riled up about those choices.  I would say that
none of the choices can be a correct answer.
All four choices are just numbers, without units.
Resistance is not a bare, naked number.
It's a ratio of voltage to current, and in DC circuits,
it typically has units of [ohm] .

Resistance  =  (voltage) / (current)

                   =  (18 v)  /   (36 A)  =  0.5 ohm .

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