Commerce

Totally depends on your skill sets and interest. Talk to alumni from both the fields and do a lot of online research and then ask yourself the right questions to arrive at a informed decision. Biology (Sciences) leads to Bachelors in medical, nursing, dentistry, physiotherapy, botany, zoology, biotechnology, bioinformatics, genetics, chemistry. Commerce leads you to accounting, finances, economics, statistics. ICWA and CA are relevant qualifications.

There are lot of opportunities in the filed of commerce, just make sure that to learn basics in this stage only.

Yes, he can.
Minimum requirements:
50% marks in any stream.
Must have completed graduation in case for opting MJMC (noe compartments, reappears or backlog).
* as most of the colleges do not give admission as per UGC rules.
It does not require any journalism background for opting BJMC or MJMC but for M.Phil and PhD.

Under commerce- Economics, statistics, accountancy, English, mathematics and business studies are the subjects. Thereafter, you can go on to Bachelor of commerce. CA and ICWA are qualifications you may want to explore in the meantime.

Hi,
There is no such problem to pursue company secretary. Foundation programme can be pursued by 10+2 pass or equivalent students of arts, science or commerce stream (Excluding Fine Arts).
https://www.icsi.edu/WebModules/AboutUs/Courses/CS_Course_01042014.htm

If you want to study little harder and pass the PUC, then it is one of the good options. If you wish to not do that and want to take it from 10th qualification, then you may consider Diploma in varied options such as engineering, hotel, hospitality and travel - tourism management, fashion designing, interior designing, fine arts, beauty culture, animation to name a few.

Yes, you are eligible, since you have business Maths, so you can have little knowledge of Maths, so no worries, you are eligible for B.Com (Hons). In DU. All the best.

No, admissions for BBA are closed in the month of May.

Pursue BBA+MBA dual specialization from a good institute. You can choose subjects marketing, retailing etc. That will help you in managing your business. There are many universities in India that provide this course.