What does walker describe to symbolize dees character in this passage

Identify the type of narration used in the excerpt.which words in the excerpt indicate the type of narration?

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.

As a representative of a pharmaceutical company, you have been asked to speak to a group of physicians at a medical conference to introduce a new drug. when discussing how the drug works, which strategy is not appropriate?