Question

cancer occurs when... cells miss their cue to exit the cell cycle. cells exit the cell cycle and stop dividing completely. cells die. cells fail to copy dna accurately.

Explanation:

Cancer is a disease characterized by uncontrolled cell growth. Normal cells follow a regulated cell cycle. When cells miss their cue to exit the cell cycle (i.e., they keep dividing without proper regulation), this uncontrolled proliferation can lead to the formation of tumors (a hallmark of cancer). If cells exit the cell cycle and stop dividing completely, that is a normal part of cell - cycle regulation (like in differentiated cells). Cell death (apoptosis or necrosis) is also a normal cellular process in tissue homeostasis. While DNA replication errors can contribute to cancer (as they may lead to mutations in oncogenes or tumor - suppressor genes), the immediate cause related to the cell - cycle aspect is the failure to exit the cell cycle when appropriate.

Answer:

cells miss their cue to exit the cell cycle.