A computer can process a) numerical data only

b) graphical data only

c) alphabetical data only

d) all of the above

A computer can process D.) All of the above.

See when a computer is set up properly it must make graphs for data monitoring, and among that graph there tends to be numerical data too. A computer must also be able to process alphabetical data as well, that way it can log and register the pressing of keys and allow them to there for preform there actions. This eliminates the options of A B and C, leaving you with only one logical answer, D.

Hope this helps and have a nice day.

Kaikai Kitan