The element sulfur (s) is most likely to form covalent bonds with the element helium (he). magnesium (mg). zinc (zn). oxygen (o).

The answer would be : with the element oxygen (o).

Hope this helps !

Photon

The element that is mostly likely to form covalent   bonds with Sulfur  is   Oxygen ( O)

Explanation

  Covalent bond is bond that involves the sharing of  electrons  pairs  between atoms.   Mostly  a covalent bond is formed when  two non metals  react. for example  when S  react with O2 to form SO2  a covalent  bond is formed since each oxygen atom share two  valence electrons with sulfur.Helium is inert therefore it  does not react with Sulfur.Magnesium and Zinc are metal and react with sulfur to form an ionic bond.

The answer for this question is d. none of these