A6.0 m section of wire carries a current of 5.2 a from east to west in the earth's magnetic field of 1.0 × 105 t at a location where the magnetic field points south. in which direction does the magnetic force act on the wire?

Well, since you only want direction, ignore the numbers. Use the right hand rule.
Current (pointer finger) points west (left). 
Magnetic field (middle finger) points south (towards you). 
Force (thumb) then points up (away from the earth)

Your answer is c. explanation: plasma  is the fourth state of matter, derived from the gaseous state of matter.  plasma  can contain free  electrons  and/or  ions. while  plasma is never neutral, it can either be positively or negatively charged.  gases, however, are electrically neutral.