C. The tumors can crowd organs and disrupt their functions.
Tumors, which are abnormal growths of cells, can create various problems for an organism, primarily due to their ability to crowd and interfere with the normal functioning of organs and tissues. This is called as Metastasis
It's important to note that tumors are highly diverse, and their effects on the organism can vary depending on factors such as their location, size, growth rate, and the specific type of cells involved.