The correct answer to this open question is the following.
Although there are no options attached, we can say the following.
A potential optical issue developing countries could face when it comes to teaching and learning is the lack of proper technology to cover the many educational necessities of a large population of students that do not have enough resources to get computers in their homes.
Some countries are so poor that even the school do not have proper digital classrooms with the kind of hardware and software to provide a quality education system to their students.
This is a major issue in most developing countries because the internet is limited to certain areas of the country, it is slow, and most of the people are poor and are no able to get a computer. And when there are two or more kids in the family, not all can use a computer. Developing country families have other priorities trying to survive.