Answer:
C,D.
Explanation:
Extrusive, or volcanic, igneous rock is produced when magma exits and cools above (or very near) the Earth's surface. These are the rocks that form at erupting volcanoes and oozing fissures.
5 Na molecules and 5 Cl molecules
I believe it is b. you only want to change one thing at a time so you know which one thing caused the effect
