What is true of carbon atoms? (2 points) they are not found in living organisms. they have five valence electrons. they can form up to four covalent bonds. the do not bond with other elements.

By process of elimination you can find the right answer. We know for a fact that carbon is found in all living organisms. That is why we talk about carbon based life forms. So the first statement cannot be true. You can figure out how many Valence electrons an element has by looking at the group number. The group number of carbon is 4 so the 2nd statement cannot be true. We know that carbon does bond with other elements because it is not a noble gas and therefore must be able to form compounds.
This means the answer must be they can form up to four covalent bonds

Digestion because it removes waste