An ylide is a molecule that can be described as a:

a. carbocation bound to a carbon radical.
b. carbocation bound to a positively charged heteroatom.
c. carbanion bound to a positively charged heteroatom.
d. carbanion bound to a negatively charged heteroatom.
e. carbocation bound to a diazonium ion.

Option c. carbanion bound to a positively charged heteroatom.

Explanation:

A ylide is a molecule containing a negatively charged usually a carbnion atom directly bonded to a positively charged heteroatom in which both atom have complete octet congratulations.

if you mean hydrogen and oxygen then water is the product