A source is O a statement that could be challenged.
a reference where information is found.
a fact or detail that supports a statement.
O a claim supporting an opposing argument.

What is the best way to combine these sentences?

Correct my question my english is not good: “what the effect and the effectiveness of strength exercise in breast cancer medication related to lymphedema? ”

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.