I’m guessing B, but I’m not for sure
had u missed out the words can u rephrase it and i will try my best to answer this questions
Pigments are defined as the set of compounds that have an intense colour and are used in the colouring of other materials. These colouring substances are also called Biological Pigments or the Biochromes, which mainly refers to the true pigments.
Positive - Rural communities lose human capital, particularly young adults who are attracted to education and job opportunities in urban centers.
Negative - The migrant population tends to be wealthier and better educated than rural populations, but poorer and less educated than urban populations.