once civilizations could grow excess food thousands of years ago, people in those societies soon learned…

once civilizations could grow excess food thousands of years ago, people in those societies soon learned to\na make weapons to attack their rivals.\nb create religions with specific rules.\nc specialize in specific forms of labor.\nd develop a common spoken language.
Answer
Brief Explanations:
When civilizations could grow excess food, it led to a surplus. This surplus allowed some people to stop focusing solely on food - production. They could then specialize in other forms of labor like craftsmanship, trading, etc. There is no direct and immediate connection shown in the question context between excess food and making weapons (A), creating religions (B), or developing a common spoken language (D) as strong as the connection with labor specialization.
Answer:
C. specialize in specific forms of labor.