The correct answer is A. Nomadic clans grew into civilizations when they learned to form permanent villages.
Step-by-step explanation:
The beginning of human civilizations, as well as, permanent human settlings such as cities was the result of a sedentary lifestyle. Indeed, before the first civilizations, human communities survived by hunting animals and gathering resources in one location and then moving to another depending on availability, which is known as nomadic life. This changed during the Neolithic as human groups developed agriculture and could settle in one place leading a sedentary life. This important advancement led to the creation of settlements, which later grew to villages, towns, cities, etc. According to this, societies were first composed of nomadic clans but this later became civilizations as permanent settlements were created (option A.)