What are malignant tumors?
1. tumors that grow slowly and do not spread from their original site
2. tumors that grow fast and spread to neighboring tissues
3. tumors that start in blood-forming tissue and produce abnormal blood cells

The correct answer is choice 2. tumors that grow fast and spreading to neighboring tissues. Malignant tumors or cancerous tumors are tumors that grows and multiply to become cancer overtime. This tumors are due to the high unstable abnormal cells that travels in the blood stream.

Malignant tumors are: 2. tumors that grow fast and spread to neighboring tissues This type of tumor is considered really dangerous because the tumor could potentiallly pressed a crucial nerve endings that could cause someone to lose functions of some parts of their body if they're not treated as soon as possible.

explanation:

two years ago, when picking flowers in the mountains back of yosemite valley, i found a book. it was blotted and storm-beaten; all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however; many of the inner pages were well preserved. and although all were more or less stained and torn, whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today; its granite pages have been torn and blurred by the same storms that wasted the castaway book.two years ago, when picking flowers in the mountains back of yosemite valley; i found a book. it was blotted and storm-beaten, all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however, many of the inner pages were well preserved. and although all were more or less stained and torn; whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today, its granite pages have been torn and blurred by the same storms that wasted the castaway book.