The brønsted-lowry theory defines an acid as a(n)
a. hydrogen ion donor.
b. hydrogen ion acceptor.
c. electron-pair donor.
d. electron-pair acceptor.

clouds form

solid ice forms on leaves.

water droplets form on grass.

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.