Final answer:
The local humane society should use persuasive mode of writing in the brochure to convince visitors to adopt a dog.
Step-by-step explanation:
The local humane society should use Persuasive mode of writing in the brochure. The purpose of the brochure is to convince visitors to adopt a dog, so a persuasive mode of writing would be most effective. It should highlight the benefits of adopting a dog, such as companionship, love, and loyalty, and emphasize the positive impact adoption has on both the dog and the owner's life.