Q: You are presented with the quiz "What is one type of abnormal cell division?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "cell division often causes growth" and "tumor simply means abnormal growth". So, what's the best answer to the question?

Available options:
[-] mildew.
[-] two.
[-] SNPs.
[-] deadly.
[-] haploid.
[-] tumor.
[-] disease.
[-] HIV.
A:
tumor