Final answer:
The period from 3500-1500 BCE is associated with the Neolithic Revolution, which brought about agriculture and settled communities. From 1100-500 BCE, which marks the Iron Age, iron became predominant in tools and weaponry. The correct answer is c) Neolithic Revolution, Iron Age.
Step-by-step explanation:
The early civilization period of world history runs from approximately 3500-1500 BCE and from 1100-500 BCE. The first part of this period, from 3500-1500 BCE, corresponds to the time when the first civilizations, such as those in Mesopotamia, Egypt, the Indus Valley, and China, established themselves. The development during this time is linked to the Neolithic Revolution, which was a major transition in human history due to the development of agriculture and settled communities.
The second part of the period, from 1100-500 BCE, is known as the Iron Age. This age is characterized by the widespread use of iron for tools and weapons and significant advancements in cultural and technological developments.
The correct answer to fill in the blanks for the sentence in question would be c) Neolithic Revolution, Iron Age.