What do some experts believe will hinder demographic transition in some developing countries? 

A)  lack of cooperation 
B)  lack of commitment 
C)  lack of financial capital 
D)  lack of people

Some experts believe that lack of financial capital, such as inadequate investment in healthcare and education, can hinder demographic transition in developing countries. This can lead to poor health outcomes and low levels of education, which can negatively impact a country's ability to transition from high birth and death rates to low birth and death rates. Lack of resources can also make it difficult for governments to implement effective population policies and provide necessary support for families to have fewer children.