metal is corrosive to the skin. foot carries large amounts of bacteria. foot is the most sensitive part of the body. metal may be contaminated and cause infection.
If a child scrapes his foot on a piece of rusty metal, it is important to get medical treatment because the

Options:
- metal is corrosive to the skin.
- foot carries large amounts of bacteria.
- foot is the most sensitive part of the body.
- metal may be contaminated and cause infection.

metal may be contaminated and cause infection.