I would say
B. Only Ranger B is correct
because introducing an invasive species has never helped the environment ever, plant or animal. The Asian Carp, the Asian Chestnut Tree...
Answer:
i don't know i am just bored
Explanation:
1d) was designed (long time ago so past tense)
2d) Has been repaired (It is still going on the present, this year)
3c) Had discovered (He discovered America long time ago)
4a) To have worked (worked long ago when he was young)
Hope it helps!
I think the answer is D. It's because tidbit means a piece of a tasty food