Question

Which sentence does not contain any errors? A. Does the dog like to curl up in its bed? B. Does the dog like to curl up in its' bed? C. Does the dog like to curl up in it's bed?

Answer 1

(A) I explain this to my friends all the time

(it's means it is

Answer 2

A is correct.
Explanation: Because it's means it is 
Its means something like theirs, itself, e.x - the dog likes to curl up in its bed.