Which of the following describes the demographic transition phase that has low death rates and low birth rates?

Post-transition

Explanation:

During the early stage of demographic transitory, there will be a high chance for conflicts to occurs since there are more people who become restless because of the existence of other people demographic. Infrastructure such as hospitals or school also hasn't really been well established

After post-transition, most people already made an effort to live and socialize with other people from different backgrounds and the expenses created from the modern economy will make people think twice before having a child. This create low death rates and low birth rates in return.

answer; i believe that the correct answer is ( rivers);

what are the options?