Final answer:
Jalal's sketch includes a safety support at the base of the climbing wall, which is important for stability and safety.
Step-by-step explanation:
In Jalal's sketch of the climbing wall, the presence of a safety support at the base of the wall is reflected. This safety support is important to ensure the stability and safety of the wall, as it helps to prevent the wall from toppling over. By providing a solid base of support, the safety support helps to distribute the weight of the wall and the climber evenly, thus reducing the risk of accidents.