Class 12-arts

Because fine arts consist theory 40% and practical 60% so they will convert marks on pro-rata basis and then a deduction on 2.5%
This is how you can include the subject so they include in best four but they deduct 2.5% from your overall %.

You can go for UGC NET and become a assistant professor or you may apply for any foreign language course. It makes a good combo of BBA and language. So, you'll get a good job in MNC.

Yes sure. You can do B.Com after your 12th art stream. Eligibility Criteria
Pass with 50% marks in 10+2 student must pass in Higher Secondary School examination from a recognised educational board students must have Maths and English as core subjects. Minimum 50% marks are required at 10+2 level. Moreover, students from Science and Arts stream are also eligible to apply, those with Commerce stream are preferred
Following are some colleges for B.Com:
Shri Ram College of Commerce
Lovely Professional University, Punjab
University of Delhi
Loyola College, Chennai
Hansraj College
St. Joseph's College
Hindu College, Delhi
Good Luck.

Event management, language course as in French Spanish. You can get job in embassies or work as translator in MNCs, mass communication course, hotel management, entrepreneurship course, hair stylist make up artist. They all have scope for abroad job. So, you may get some idea from this.
Best of luck.

You may go for Hons in English, political Science. Hotel Management course. Fashion designing, textile designing, physical education BPH Ed), you may go for your hobbies as in dance singing. Do certified course from any good dance academy if you have interest in dance. Or do any Diploma course, short term course. So don't think that arts stream can't do nothing, the world is still much more explore.
Best of luck.

I think no, you cannot as arts background can't apply for BCA. If you have Informatics practices (IP). So, you can apply because their entrance exam have questions related to maths and some computers application as in C+ Java SQL. So, for you, it's very difficult to pursue BCA because of arts background. But you may opt for other course as in English hons. Language course as in French Spanish Hons.
Best of luck.

You can pursue but I think in SOL. And that does not matter from CG. But I think DU cut the % because of open board.

Don't think that arts student can't do anything. They have a lot of courses to pursue but you have to choose your passion. Don't opt for any course for just Money oriented scope it should have the balance of money and interest. Think about your interested subject in arts as in English history political Science they are much more knowledge gaining subjects. Or if you don't want much study go for any short term course as your suitability, you can do any Diploma course, so think about first your interested hobbies and then go for course, don't just opt any course without thorough information regarding to it.
Best of luck.

Art students are always confused for their future, but guys there are many courses left for you and these are much better than commerce/science fields. You may go for your hobbies as in dancing singing cooking, designing, etc. And don't get much worried about Future because in this era of 21st century still Science field jobs as in B.Tech BCA also rolling for jobs. So, the job section totally depends on your experience and knowledge and also luck. So, choose any course but with your total interest and dedication. Best of luck.