Which of the following is true about cancer?
a. it is characterized by cells multiplying uncontrollably and destroying healthy tissue.
b. it is rarely a life-threatening disease.
c. it is caused by foreign cells invading the body.
d. it is easy to treat and to understand.

A. it is caused by cells multiplying uncontrollably and destroying health tissue

A, cancer, or a tumor, is made up of cells that 1 divide uncontrollably 2 dont destroy (themselves) because of these faults 3 if its malignent the substance that holds the cells together dissappears/doesnt work properly (?) and allows the cells to spread throughout the body

The answer is a if u read the definition it makes sense