Your heart pumps blood and it travels to your lungs.
Answer:
A) Changes in cell shape, size, and organization
Explanation:
Changes in cell shape, size and organisation suggests that a population of cells have changed identity. This could indicate the presence of mutations in the DNA that could lead to uncontrolled cell proliferation or abnormal cell types. These are indicative of tumorigenesis and potential pre-cancerous cells.
It would be B or C. I'm SURE it would be C though.
"A" means to cause air to enter and circulate freely in (a room, building, etc.), which fire NEEDS air in order to be alive, so that would be BAD. "D" is saying to store guns in locked cabinets... which doesn't really make sense.
