Which example best demonstrates biodiversity?

A common Pennsylvania fish called the walleye will swim miles upstream to spawn.
The males of many bird species are brightly colored, while the females of the same species are dull or drab in color.
Cook Forest State Park is home to more than 50 tree species.
There are more than 25 endangered or threatened species in Pennsylvania.

Question

Which example best demonstrates biodiversity?
 	
	A common Pennsylvania fish called the walleye will swim miles upstream to spawn.
	The males of many bird species are brightly colored, while the females of the same species are dull or drab in color.
	Cook Forest State Park is home to more than 50 tree species.
	There are more than 25 endangered or threatened species in Pennsylvania.

rushwr · Answer

Biodiversity is the variety of different types of life found on earth. It is a measure of the variety of organisms present in different ecosystem. So what do u think the answer is ?

anonymous · Answer

I would assume it would either be C or D. @Rushwr

anonymous · Answer

I think it would be c

rushwr · Answer

I think it would be B Cuz it talks about variety of species !

anonymous · Answer

Same with C and D :/ C talks about the variety of 50 tree species and D talks about the variety of 25 endangers and/or threatened species. Though its possible for it to be B considering it's not being bias right? It's not talking about a certain park or state, it's just talking about the male and female birds? @Rushwr

rushwr · Answer

yes exactly ! It talks about different ecosystems right? It talks in general ! But in C and D they talk about specific ecosystems