Question

when cells ignore stop signals and congregate too closely, what can they form? a wart a bunion a tumor a cyst

Explanation:

When cells ignore stop signals and grow too closely, they form a tumor. A wart is caused by a virus, a bunion is a bone deformity, and a cyst is a fluid - filled sac. Tumors result from abnormal cell growth disregarding normal regulatory signals.

Answer:

a tumor