You want to make a transition between one argument in support of a particular point of view, and another which supports the opposite point of view. Which would be the most appropriate transition to use for this circumstance?

A) "Then"
B) "Again"
C) "What's more"
D) "On the other hand"

Which statement contains an opinion? the ants serve to protect the acacia from other plants and herbivores. the acacia depends on pollinators for the exchange of genetic material. the acacia has no chemical defenses to discourage herbivores. the ants provide the acacia with the best protection from other plants and herbivores.