Sven has recently developed a new type of solar cell. When he tests how efficient it is at converting light energy into electrical energy, he finds that it is 54% efficient. Sven publishes these findings in a scientific journal. Martha decides to repeat Sven's experiment, but she finds that the new solar cell is only 38% efficient at converting light energy into electrical energy. What should Martha do with her new findings?

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.

the answer your looking for is c).