Considering the available options and the pyramid of Kazakhstan, the prediction about the year 2070 that is the MOST accurate is the "dependency ratio is likely to increase."
Interpretation of the current pyramid
Currently, we are in 2021. By 2070 that would be about 50 more years.
Looking at the pyramid, there massive population of those 25 to 39 years presently.
Therefore, by 2070 many of these people would be between 75 and 89 years or more, making them dependent citizens due to their inability to work.
Hence, in this case, it is concluded that the correct answer option B. "dependency ratio is likely to increase."
Learn more about dependent citizens here: https://brainly.com/question/9354369