I think its b im not sure im in 8th grade
Well its C, cant show you the work its in my head sorry.
Answer:
The value is 
Explanation:
From the question we are told that
The length of the wire is 
The current density is 
The conductivity is
Generally conductivity is mathematically represented as

Here R is the resistance which is mathematically represented as

Here I is the current which is mathematically represented as

So

And

=> 
=> 
=> 
=> 
False, that does not apply to some
You should put when you will leave, where you will be, and what time you will get back.