17. If two oxygen atoms combine to make a molecule, what type of bond will they form? A) an ionic bond
B) a hydrogen bond
C) a covalent bond
Datuba

C. A Covalent Bond

Explanation:

two covalent bond form between the two oxygen atoms because oxygen requires two shared electrons to fill its outermost shell

d is the answer i came up with

i guess that visual aids present persuasive examples to what you are presenting, some factors would be theme (does it fit with the color, information, what you are presenting), size (can you see it, is it a big enough span of data/information), and overall look of the visual aid.

hope this : )