Final answer:
School counselors appropriately engage in analyzing trends in grade point averages, as it aligns with their role in fostering academic development and aligns with the guidelines provided by the ASCA.
Step-by-step explanation:
According to the American School Counselor Association (ASCA), an appropriate activity for school counselors is B. Analyzing trends in grade point averages. School counselors are responsible for supporting the academic development of students, which involves analyzing academic performance to identify trends and issues that may require intervention. They play a crucial role in facilitating student achievement and monitoring academic progress. This task aligns with the ASCA National Model, which emphasizes the delivery of comprehensive, data-driven school counseling programs. Other activities like classroom supervision or data entry are typically not part of their core duties.