Step 1: Plan the method:
Instead of going statement by statement from the start, we first find the sentence in the passage that lists reasons for protection, then tick each statement against it.
Step 2: Find the reasons sentence:
The speaker says tribes were not a numerical minority but needed protection. Then he gives a chain of causes: they lost the land they had settled, lost their forests and pastures, and had to move in search of new homes. Society then looked at them as primitive and backward and turned away.
Step 3: Map the causes to the statements:
Loss of settled land matches A. The view of them as primitive and backward matches B. Society turning away matches C. Loss of forests and pastures matches D.
Step 4: Count the matches:
Every statement has a match, so none can be dropped. We need the option that has all four letters.
Step 5: Select the option:
Only option 3 lists A, B, C and D. The other options each miss one statement.
Final Answer:
All four statements are supported by the passage. The answer is option 3.
\[ \boxed{\text{Option 3}} \]