Describe what you think is your responsibility in taking care of the natural
world in which you live.

Well I would say " I think my responsibility is recycling, gardening, picking up litter, and using less pollution. All of this stuff is very important. Sometimes, it's the tiny things that change the world for the better."  

I hope this helped! Feel free to add your own little tweaks.

fun caring loving person

i'm assuming that the correct answer is indeed the first one/ "a"..