The answer is A or the first one
Increase in urbanization will lead to increase in the number of people who are living in an urban area and it will also lead to increase in development in that area. The increase in development can come in form of construction of industries, which release large amount of waste products that pollute the air. This will lead to air pollution and reduce air quality. Development can also be in form of availability of electricity, that makes it possible for people to operate different electrical gadgets such as radio and television, which can result in noise pollution. Increase in the number of people who operate motor vehicles will also lead to increase in air pollution, which is caused by fossils fuel.
Answer: The correct answer for the fill in the blank is- Law of independent assortment.
According to the Mendel's law of independent assortment, the allele ( alternative form of a gene that corresponds to a trait) pairs of different genes segregate independent of each other during the process of gamete formation. This means that different traits are transmitted independently from parents to their offspring.
Thus, Law of independent assortment is the right answer.