D. People with asthma or other respiratory illnesses.
This is correct because people with these issues struggle a bit more with their immune systems more than others. Their lungs and other respiratory organs can become irritated faster than those of non-asthmatic people and such in that area.
The correct answer is:
B. Relocation to suburbs.
Relocation to suburbs has been a constant of urban life since the early 1900s.

The Berbers are the earliest known inhabitants of Africa's Mediterranean coast. They are an ethnic group indigenous to North Africa. They lived in an area stretching from the Mediterranean Sea to the Niger River, and from the Atlantic Ocean to the Siwa Oasis in Egypt. Today they live in scattered communities across Morocco, Egypt, Tunisia, and Libya, for example. Today, Berbers are identified primarily by the language they speak as well as their distinctive traditional customs such as music and dance types.
The enlightenment changed the mind set of people where they used reasoning and observation and this led to development of scientific revolution.
<u>Explanation:</u>
Enlightenment came in the sixteenth and the seventeenth centuries majorly in France and with the coming of this, the mind set of the humans changed and they paid more attention to observation and experiment which led to the formation of the laws and moved away from superstitions. Because of use of human mind for observation, this led to the development of the scientific revolution where more importance was given to reasoning.