Carbon dioxide (CO2)
Argon (Ar)
Hydrogen (H)
Helium (He)
Talk to them back don't be scared
Hey there!
The correct answer to your question is a compound.
A substance of two or more elements chemically combined in a set ratio, or proportion, is called a compound.
This is because compounds are made of two or more elements. Table salt is an example of a compound because it is made up of the elements chlorine and sodium.
Hope this helps you.
Have a great day!
