The correct spelling is Schizophrenia. It is a chronic and severe mental disorder that affects how a person thinks, feels, and behaves.

১. The other options are incorrect variations that misplace the 'h', 'i', or 'e' in the word.
২. Remembering the "Schiz-" prefix and "-phrenia" suffix helps in spelling it correctly.
৩. Spelling questions are common in BCS to test the candidate's attention to detail.

অতিরিক্ত তথ্য: This term was coined in 1908 by Swiss psychiatrist Eugen Bleuler.