Select the option that is related to the third word in the same way as the second word is related to the first word.

Orange : Saffron :: Blue : ?

Turquoise

Orange : Saffron :: Blue : ?

The logic followed here is :

Orange : Saffron

Saffron is the color resembling the color Orange

Similarly

Blue : ?

Turquoise = Turquoise  is blue/ green color , Based on the gem of the Same name