The organism among the given options which is the most harmful to the tree that it grows on is the strangler fig. The strangler fig is a type of the tropical fig. It grows on host trees, which leads to the death of the host. The roots of the strangler fig moves over the trunk of the host tree covering it. The multiple roots graft together and enclose the host completely.
Hence, the correct answer is 'option A - strangler fig'.
I think the correct answer from the choices listed above is option A. The organism that is the most harmful to the tree it grows on would be a strangler fig. This plant grows on trees and end up <span>killing it host or the tree after growing. Hope this answers the question.</span>
