Answer:
its good no need to change anything :))
I'd say b, precise, here.
If there's an error somewhere in the experiment or project, then it is consistently .... wrong. So, just 'cos you measure something precisely, it doesn't mean that you've measured it accurately. Maybe an example would be a measurement of length. If you used a metal ruler at zero degrees C, you can measure to say half a millimetre. A series of measurements of the same object would give very similar readings. But, if you used same metal ruler at, say 100 celsius (implausible) then you'd probably get a different set of readings. 'cos of the expansion of the metal ruler.
Answer: I believe the right answer would be C
I hope this helps. Correct me if im wrong
The answer to this would be plastic. The other options are conductors. Remember, metal is a conductor as well as the salt ions in salt water.