Answer:
D, but if feel sorry my second guess will be B
 
        
             
        
        
        
Magma! I think and hope this helps
        
             
        
        
        
an industrially developed country
Explanation:
A declining birthrate can be attributed to an industrially developed country. Birthrate is the number of births per thousand of population in a year. 
- Several factors contributes to variations in birth rates some of which are: 
- Economy
- Religion
- Social structure
- Family planning 
- Culture
- Education
- A declining birth rate can be attributed to industrially developed countries. 
- In such countries, more women take part in the workforce. 
- When women becomes employable and serves as industrial workers, they are not likely to tend to reproduce more. 
- This can lead to a decrease in birth rate. 
Learn more: 
Population trend brainly.com/question/13181732
#learnwithBrainly
 
        
             
        
        
        
Answer:
A-Weight
Explanation:
Genes, genders, and parents will be the same in identical twins.