question about salt bridge

Question

I am struggling with this question,

 

a salt bridge in a battery

 

a.  causes positive charges to build up where oxidate takes place

b.  causes negative charges to build up where reduction takes place

c.  allows positive ions to go where there is a buildup of negative charges and negaive ions to go where there is a buildup of negative charges and negative ions to go where there is a buildup of positive charges

d.  none of these

 

I know salt bridge will help transfer ions but can they be transferred to build ups.  Plus I know salt bridge does not prevent build ups.

 

thanks

Answer 1

Do you have a diagram in your book or resource? What causes the positive and negative charges to build up on their electrodes? Is a salt bridge shown with any explanation? What happens if you take away the salt bridge--would there still be a buildup of charge? Would there be a way for current to flow?