The correct option is (d).
Explanation:
Alkyl halide is 1o. As we know, 1o halide gives product by SN2/E-2 mechanism and 1o halide always gives substitution reaction except when strongly hindered base is used.
It is because the stability of a charged system is increased by dispersal of the charge. The more stable the carbocation, the faster it is formed.
Rearrangement can be done in two ways :
