Question

figure 20
(refer to figure 20, area 2.) the flag symbol at lake drummond represents a

Explanation:

On aeronautical charts, the red flag symbol at Lake Drummond (area 2) denotes a closed or restricted area where aircraft operations are prohibited or highly restricted, typically due to safety, security, or operational reasons.

Answer:

The flag symbol at Lake Drummond represents a restricted (closed) airspace area where aircraft operations are prohibited.