**Maximizing Focus: Which Strategy to Minimize Phone Usage During Class?**

The most effective strategy among the provided options to minimize phone usage during class would likely be: A. Collect phones at the beginning of the class. This ensures that students are not able to access their phones during class time, thus minimizing distractions and encouraging them to focus on the lesson. Option B, using a phone storage area, could also be effective, but it's similar in concept to option A. Option C, imposing strict penalties, may create a negative environment and could be more challenging to enforce consistently.