Question

Decreased death rate followed by decreased birthrate has occurred in a. MDCs. b. LDCs. c. MDCs and LDCs. d. neither MDCs nor LDCs.

Short answer

The short answer is: \(a. \textrm{MDCs}\)

Step-by-step solution

Understand the terms MDCs and LDCs

First, we need to understand what MDCs and LDCs are. MDCs (More Developed Countries) are countries with a higher level of development, including countries such as the United States, Germany, and Japan. LDCs (Less Developed Countries) are countries with a lower level of development, including countries such as Afghanistan, Haiti, and Nigeria.

Understand the demographic trends

The question is about the changes in death rates and birth rates. A clear understanding of demographic trends will help in identifying the correct answer. In MDCs, the death rate and the birth rate both have been decreasing over time due to improved healthcare, better living conditions, and family planning strategies. In LDCs, the death rate has decreased due to healthcare improvements, but the birth rate remains high as education and family planning strategies have not yet fully reached these countries.

Analyze the given options

Now, let's analyze the four options given: a. MDCs: This is true because, as mentioned above, both death rate and birth rate have decreased in MDCs. b. LDCs: This is false because, while the death rate has decreased in LDCs, the birth rate remains high. c. MDCs and LDCs: This is partly true because the death rate has decreased in both MDCs and LDCs, but the birth rate has only decreased in MDCs. d. Neither MDCs nor LDCs: This is false because a decreased death rate and birth rate have occurred in MDCs.

Find the correct answer

Based on our analysis: - Option a (MDCs) is true. - Option b (LDCs) is false. - Option c (MDCs and LDCs) is partly true. - Option d (neither MDCs nor LDCs) is false. The best answer is option a (MDCs).