Correct Answer: ab #

Solution : Given:
1. pinch of salt grey ⇒ ab tr # kp,
2. grey colour is black ⇒ # jm bk if
3. colour are of track ⇒ gt if ab fr. How will grey of be written in that language?

By comparing all the three coded sentences, we find that –
In sentences 1 and 2, grey and # are common.
In sentences 2 and 3, colour and if are common.
In sentences 1 and 3, of and ab are common.
The remaining words and codes in sentence 1 are pinch/salt and tr/kp ; in sentence 2 are is/black and jm/bk ; in sentence 3 are track/are and gt/fr
Finally, grey ⇒ #; colour ⇒ if; of ⇒ ab; pinch/salt ⇒ tr/kp; is/black ⇒ jm/bk; track/are ⇒ gt/fr

So, grey of is written as # ab or ab # . Hence, the first option is correct.