hi,
see you can take admission in b.a course after completing the diploma in civil engineering, however the field will be fully different then the current studies you are doing. In arts stream there is less of mathematics applications. however based on job trends in market you should take b.a course in english or economics which I consider to preferable among other streams of B.A. however take decision wisely and think what you want to do next. there is many government and private sector jobs are available after completing diploma in engineering. so in case you do not want to do higher study you may search for jobs. hope you understand.
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