Final answer:
The correct answer is option b) Social Studies.
Step-by-step explanation:
The statement that early Texas settlers learned new skills to be self-sufficient aligns with Social Studies. Early settlers were similar to hunter-gatherers in the sense that they depended on the environment for survival, but because they were able to establish permanent settlements, they did not need to move frequently, which led to greater stability and an increase in material goods.
This transition laid the groundwork for the first major revolution in human survival, known as the Agricultural Revolution. Settlers learned techniques such as crop rotation and the use of natural fertilizers like manure, which were innovations stemmed from the Agricultural Revolution and were crucial for improving harvests and creating food surpluses, ultimately encouraging the growth of trade and commerce in well-situated regions. Furthermore, these settlers often had to learn additional skills relevant to agriculture, use of language for trade, and the domestication of animals.