Answer:
I hope I got this correct.
Explanation:
I believe this is the 4th choice.
Because...
35,000 + d + 1000
36,480
36,000 + d
36,480
d
480
that means you will have to catch 480 dragonflies after you reach the 35,000 mark plus the 1,000 points when you reach there. I know you didn't need those numbers, but I didn't know any other way to explain :)