Which even was most likely the cause of the changes in species diversity in the ecosystem

The difference in the way each species eat and survive cause the changes in the species diversity.

your answer should be c) enjoy!

you didn't give any options but heres what i can tell you: an inference is likely to change based on additional observations. the latter is something that you have seen or sensed using your sensory organs while the former is like a conclusion out from what you have observed.