Question

how do some people write in left hand???

Answer 1

everyone have their own comfort zone.
some choose writing with left but most persons writes with right hand........

hope this info. helps uh✌✌

Answer 2

Research since the 1980s has found that our preference for our left or right hand is most likely determined before we are born - ultrasound screenings suggest as early as the eighth week of pregnancy. From the 13th week in the womb, babies tend to suck either their right or their left thumb.

Hope this may help you