The correct answer to this open question is the following.
You forgot to include image number 2. However, doing some research we can say the following.
The image illustrates the spread of scientific knowledge in the period before 1450 in that it shows the Muslim presence in different bedrooms where sick lies on the bed. The image illustrates that Arab people that practiced Islam also had medical knowledge resulted from the many exchanges with other cultures and nations. Scientific research in the Arab world was more advanced and quickly spread all over other regions in the Middle East, North Africa, and some eastern European regions.
The answer is C.) parts could be replaced on a machine without replacing the entire machine
<span>C. Baby Boomers.
The period from 1946 to 1964 is known as the "baby boom" period in the United States. More babies were born in America than ever before in 1946, and the high birth rates continued for a number of years. Birth rates in the late 1940s and 1950s were much higher than they had been before, especially during the very low years of the Great Depression and World War II.
The birth rate in the US in 1935, in the midst of the Depression, was 18.7 births per 1,000 members of the population. At the peak of the Baby Boom in the 1950s, the birth rate reached over 25 births per 1,000 members of the population. In the present decade (the 2010s), the birth rate has dropped to around 12 births per 1,000 members of the population. </span>
It is trial how it helps !
A) the creation of medical treatments
