Which option correctly uses commas to set off a nonrestrictive clause?

B

Explanation:

commas are a pause sign. try reading it when you come to comma pause and see if you pause at that part of the sentence will it make sense?

gandhi had lead a successful campaign of nonviolent civil resistance to british rule, which led to india's independence. good luck

explanation:

the teacher i would like to have must be a kind, caring and understandable teacher. she should be interactive with us and always plan fun activities to in our studies. she should be a teacher who would correct our mistakes when we do something wrong and guide us if we are weak. she should always be strict if we do something bad but must be praising us when we do something good. she she not take any as her favorite in her class but take everyone as her favorite.

(i hope this will u if there is something send me a reply)