Correct Answer  Option 3 : 157 Ω
Concept:

Reactance: It is basically the inertia against the motion of the electrons in an electrical circuit.
 The unit of reactance is the ohm. In an electrical circuit.
\(⇒ Reactance= \frac{V}{I}\)
Where V = potential difference and I = current

Impedance is a combination of resistance and reactance. It is essentially everything that resists the flow of electrons within an electrical circuit.
 Impedance of inductive circuit is given as
Znet = jωL
or
'Z = 2 π f L
Where f is frequency of AC Circuit, L is inductance
Calculation:
Given
frequency f = 50 Hz
Inductance :L = 0.5 H
'Z = 2 π f L = 2 × π × 0.5 × 50 = 157. 07
So, Z ≈ 157 Ω
So, the correct option is 157 Ω.