B.Com

A simple Graduation will not have much scope from a career perspective. You will have to pursue a PG specialised course keeping in mind your interest areas to derive long term career benefit out of it.

Yes, you can pursue Masters abroad. However, to seek admission abroad you will be required to appear for some specific tests that are applicable to respective countries. Viz, TOFEL, GMAT GRE.

B.Ed Course Eligibility:
A minimum aggregate score of 50% in graduation is a requisite for admission. A minimum aggregate score of 55% at post-graduate level is mandatory for admission into colleges.

You can go for CFA or for Masters in digital marketing.

With 80 percentile in CAT General category, don't rush for MBA, get work ex and re-appear for CAT.

Yes, he can apply for the exam.
For NDA (1) 2020: The candidates possessing age between 2nd July 2001 to 1st July 2004 are eligible for the examination. If born before 2nd July 2001 and after 1st July 2004 then not eligible for NDA (1) 2020 exam. Only unmarried male candidates are eligible for NDA examination.

You should have scored a minimum pass percentage either at the 12th level or graduation level. The percentages are 45% marks for General category, 42% for OBC and 40% for SC/ST categories. at graduate add 5 % to these.