Out of those ones, im sure its c. It's definitely not b or d. It allows motion but also protects vital organs. :)
Answer:
White or gray, odorless lumps or granular powder.
It’s about drive it’s about power
A chemical reaction (signs)
- rusting
- change in base of chemical
- for example lets say u mix two chemicals, and then it becomes a different new chemical (it changed from the inside)
a physical
- a physical reaction is outer looks not inside.
- it changes on the outside, like changing a color
