Civil Servant (IAS/PCS)

You can pursue graduation in any course as you have to be a graduate for appearing in the UPSC CSE examination. Else, you can pursue graduation in a course that is listed to choose for UPSC Mains exams.
The list of subjects are:
Agriculture
Animal Husbandary and Veterinary Science
Anthropology
Botany
Chemistry
Civil Engineering
Commerce and Accountancy
Economics
Electrical Engineering
Geography
Geology
History
Law
Literature of any one of the non-English languages listed above
Management
Mathematics
Mechanical Engineering
Medical Science
Philosophy
Physics
Political Science and International Relations
Psychology
Public Administration
Sociology
Statistics
Zoology.

You can choose any stream of your interest because to write UPSC exams, you have to be a graduate in any course. UPSC uptakes candidates from any course. You can choose your stream according to the optional subjects also. The list of optional subjects are:
Agriculture
Animal Husbandary and Veterinary Science
Anthropology
Botany
Chemistry
Civil Engineering
Commerce and Accountancy
Economics
Electrical Engineering
Geography
Geology
History
Law
Literature of any one of the non-English languages listed above
Management
Mathematics
Mechanical Engineering
Medical Science
Philosophy
Physics
Political Science and International Relations
Psychology
Public Administration
Sociology
Statistics
Zoology
All the best.

Hi!
It depends where your interest lies. If you want to join the state administration at the sub-divisional level, as a sub-divisional magistrate, and look after law and order, general administration and development work in the area under your charge, you should opt for a career as an IAS. Journalism, on the other hand, is a different sector. If you fancy reporting news, editing, videography, news anchoring and such, Journalism is the right field for you. Also, you can pursue both because IAS is a highly competitive exam. The chances of cracking the exam cannot be speculated at all. You also need to be a graduate to be eligible to apply for Indian administrative services. You can opt for Journalism as your UG course and prepare for IAS alongside.