my jee mains rank was 78000 .I know that I don't get NIT surathkal but can I choose that

Yes can choose any option you want as per your preferences.You can even choose all the options available in the option form.This will not make any difference.But you will get the seat according to your rank and the order of preference filled by you in the option form.So fill the form carefully.Choose the institute and branch most preferred at top.Rest the procedure will be automatic ,till you not get a seat ,you will be considered in each round.
Thanks.