Which kind of tumor grows slowly and is surrounded by membranes that prevent it from spreading from the original site? a. benign b. metastasisc. malignant

The answer is benign this is because a benign tumor is the only tumor that can not spread making it non cancerous. The other two words have to do with cancerous tumors.  Metastasis is a secondary caner growth which means where the cancer spread. Malignant is an original tumor that is cancerous which means it is able to spread

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