Verified Answer :

the answer is b to your question

2/∛2

Let's rationalise:

(2/∛2) (∛2/∛2) (∛2/∛2)

Note, for the denominator, ∛2  ∛2  ∛2 = 2

2∛4/2

∛4

None of the options is equal to cube root of 4.  

There is no answer. The question is flawed. You can challenge it.