It is believed that a mother language originally developed in 1)asia 2)eurasia 3)india 4)africa

The correct answer is number 4. Africa.

It is believed that a mother language originally developed in Africa.

Scientists consider Africa as the cradle of humankind. Scientists also have traced almost six thousand languages from around the world and considered that the original mother language of humanity could be traced back to Africa, 65 thousand years ago. The first Diaspora or emigration from Africa took the first language with them to other territories.

the use of email to replace slower surface mail.

the answer would be a).