LLB

Yes, you can get offline admission.
Good luck

Yes, you can join LLB. All the best.

He can opt for either BA/BBA.
Opt for BBA, if you had class 12th commerce, because otherwise it gets tough for other stream students to solve accounts problems etc. You can opt for BA. It is easy. But, anyways opting for either of them does not have any difference.

Hi,
Yes, there are universities in Kolkata offering the course. You can find them from the link below:
Most of these are private:
https://www.shiksha.com/law/colleges/colleges-india?rf=filters&ct[]=130&bc[]=78&uaf[]=location

Hi,
Kindly predict your college in this college predictor. The rank predicted might not be accurate but it certainly does give an idea to the aspirant. Know your college admission chances based on your JEE Main Rank, Home State, Caste, Gender, etc. Check it below:-
https://www.shiksha.com/college-predictor
Hope it helps.

Hey,
It would be better if you can type in English. From what I could understand, you have scored 40% in BA and now want to do LLB. you are eligible for the 3-yr LLB course which takes admission from an entrance exam.

IIMT is not that good college. If you call them, they will give you direct admission, because colleges like IIMT and Lloyd don't get enough students. So, they try everything possible to trap students and waste their career, zero placement, and irregular classes. I would suggest you drop your year and prepare well for CLAT.

You can check list of some good colleges through the following link:
https://www.shiksha.com/law/ranking/top-law-colleges-in-Delhi-ncr/56-2-0-10223-0