Answer:
The correct answer of this is Option A that is "the use of domesticated animals to make the work easier".
Explanation:
- Due to climate change animals got extinct.
- Then people move to area where climate is mild and domestication is favourable due to available of feed and fodder.
- Change in tool culture people shift to Domestication.
Thus the new development is "The use of domesticated animals to make the work easier".
