The only word out of these four which has an obvious negative connotation is C) harangue. That word means <em>to lecture somebody in an aggressive manner</em>, which is negative.
The other words have neutral connotation.
Answer: We need another Frenerick Banting in this world. We need someone as smart as him to find the cure for cancer and coronavirus. We need to unite as people and fund our scientists so we can decrease the death rate. 100,000 people a year die from cancer, and we are still just selling pink braclets? We should be funding thousands of dollars for scientists to work. If you are with me, do your part and help out.
