elect the best transition to begin her next paragraph, which discusses the harmful effects of this pollution on the city's air quality. a.) As a result, experts measure that the air quality in the city has declined by 50% in the last 15 years. b.) Also, experts measure that the air quality in the city has declined by 50% in the last 15 years. c.) Nevertheless, experts measure that the air quality in the city has declined by 50% in the last 15 years. d.) On the contrary, experts measure that the air quality in the city has declined by 50% in the last 15 years