In my perspective it should be c.
Answer:
The rule of thirds is one of the first rules in photography students learn. You can use this rule either while you're taking a photo or when you're editing a photo in post-production ( or on Instagram ).
Hope this helps!!
A I'm sure it's helps keep the button on slik is too soft wood would not help a smaller button wouldn't help so A is the correct answer
Element of what?? Principle of what ???