You are planning to build a swimming pool in your backyard. How close can you get to the trees in your backyard without disturbing their root structure?

A) all the way up to the trunk
B) within a foot of the trunk
C) up to the crown of the tree
D) at least 2-4 times the diameter of the crown of the tree
E) at least 10-20 times the diameter of the crown of the tree

When building a swimming pool, it is important to leave enough space between the pool and any trees in the area. The best option is to leave a distance of at least 2-4 times the diameter of the crown of the tree. This will help protect the root structure of the tree, which is important for the health and stability of the tree. Getting too close to the tree could damage the roots, which could lead to the tree becoming unstable or unhealthy in the long term.