The correct answer is D. Systems of writing.
Explanation
Writing systems are symbol systems that were developed by primitive civilizations to communicate and express what they lived day to day. These systems have been adopted by different communities and since ancient times languages have been built based on those writing systems. Additionally, these served to the communities to leave a record of the past because They allow to know the perpectives the communities have on their way of life, their costumes and practices. So, the correct answer is D. Systems of writing.
