Question

a water molecule is held together by __ covalent bonds, meaning there are a total of __ shared electrons in the molecule.
a 4, 10
b 2, 10
c 4, 4
d 2, 2
e 2, 4

Explanation:

A water molecule ($H_2O$) has two hydrogen - oxygen covalent bonds. Each covalent bond involves 2 shared electrons. So, there are 2 covalent bonds and a total of 4 shared electrons.

Answer:

e. 2, 4