It is definitely not B nor D because those two have negative meanings. It can't be C because excessive means "beyond the usual", which has a slightly negative meaning.
The answer should be A, conversational.
D and then if that doesn't work B. If you have anything else to ask me further about my answer (cause I have got to admit it is quite vague) just ask.
Hope this helps :) x
Answer: the correct answer your looking for is B) A habitat provides everything an animal needs to survive.
Explanation:
its B because if they didn't have everything they need to survive they could become sick like at a zoo the zookeepers have to understand what to put in the cage or not to for the animals fit habitat. have a good day and give out thz's