What was Brian's major breakthrough?

• A. He made a pin for the fish
• B. He trapped the fish in a closed area
• C. He used a net to catch them
• D. He discovered fire

Answer: (A)

The main concept here is identifying the moment when Brian solves a survival problem through making a practical tool, showing his shift from simply getting by to actively innovating with what he has. The best answer highlights the step where he creates a pin to catch fish, because this tool directly improves his ability to secure food and demonstrates his growing ingenuity with limited resources. This breakthrough is significant because it moves him from relying on luck or chance encounters to producing a reliable food source, which strengthens his confidence and independence in the wilderness. While discovering fire is crucial, and using nets or trapping in a fixed spot are useful ideas, the specific turning point described is the creation of a targeted fishing tool, which marks a clear, practical advancement in his survival tactics.