The correct answer is D. The domestication of plants and animals
Step-by-step explanation:
The first agricultural revolution occurred during the Neolithic period around 4500 BC as human groups developed basic tools and methods to grow plants and implement agriculture. Moreover, the second agricultural revolution occurred between the 18th and the 19th century, which implied the development of complex technology to increase the productivity of crops.
These two revolutions were only possible due to the domestication of plants and animals in the early Neolithic as humans stopped being hunters and gatherers and instead formed permanent settlements as they learned to use wild plants and animals for their benefit (domestication). Moreover, as domestication occurred humans required basic and later advanced tools to make the process of agriculture easier, which caused the agricultural revolutions.