what should i opt Bsc. nursing,bsc. hons,or BA hons. in psychology? please suggest.
See depending on your interest you have to select the course. If you want to go for paramedical sciences and work in a hospital background then you should for BSc Nursing. If you are interested in Psychology then I would recommend you to choose Bsc(H) Psychology rather than BA (H) in Psychology.
Although after BA/Bsc to work in the field you mandatorily will need a Masters degree but if you go for Nursing then you will have good chance to join a hospital as an Assistant Nurse. But don't only think about, I would recommend you to think of it from the point of view of interest.
I hope this answer helps. All the very best for your future endeavors!